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130140240 = 2435542251
BaseRepresentation
bin1111100000111…
…00100001010000
3100001212210211220
413300130201100
5231303441430
620525205040
73140113416
oct760344120
9301783756
10130140240
116750831a
1237700780
1320c67579
14133d92b6
15b65a110
hex7c1c850

130140240 has 40 divisors (see below), whose sum is σ = 403435488. Its totient is φ = 34704000.

The previous prime is 130140221. The next prime is 130140251. The reversal of 130140240 is 42041031.

130140240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 270886 + ... + 271365.

Almost surely, 2130140240 is an apocalyptic number.

130140240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130140240 is an abundant number, since it is smaller than the sum of its proper divisors (273295248).

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

130140240 is a wasteful number, since it uses less digits than its factorization.

130140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542267 (or 542261 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 130140240 is about 11407.9025241277. The cubic root of 130140240 is about 506.7617973113.

Adding to 130140240 its reverse (42041031), we get a palindrome (172181271).

The spelling of 130140240 in words is "one hundred thirty million, one hundred forty thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 542251 1084502 1626753 2169004 2711255 3253506 4338008 5422510 6507012 8133765 8676016 10845020 13014024 16267530 21690040 26028048 32535060 43380080 65070120 130140240