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13442130 = 23251311489
BaseRepresentation
bin110011010001…
…110001010010
3221021221010200
4303101301102
511420122010
61200040030
7222153612
oct63216122
927257120
1013442130
1176512a9
124603016
132a28530
141adca42
1512a7cc0
hexcd1c52

13442130 has 48 divisors (see below), whose sum is σ = 37641240. Its totient is φ = 3308544.

The previous prime is 13442129. The next prime is 13442131. The reversal of 13442130 is 3124431.

It is an interprime number because it is at equal distance from previous prime (13442129) and next prime (13442131).

It can be written as a sum of positive squares in 4 ways, for example, as 6456681 + 6985449 = 2541^2 + 2643^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13442131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4575 + ... + 6914.

Almost surely, 213442130 is an apocalyptic number.

13442130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13442130 is an abundant number, since it is smaller than the sum of its proper divisors (24199110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13442130 is a wasteful number, since it uses less digits than its factorization.

13442130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11515 (or 11512 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13442130 is about 3666.3510470221. The cubic root of 13442130 is about 237.7694375202.

Adding to 13442130 its reverse (3124431), we get a palindrome (16566561).

The spelling of 13442130 in words is "thirteen million, four hundred forty-two thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 90 117 130 195 234 390 585 1170 11489 22978 34467 57445 68934 103401 114890 149357 172335 206802 298714 344670 448071 517005 746785 896142 1034010 1344213 1493570 2240355 2688426 4480710 6721065 13442130