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13142253 = 34380751
BaseRepresentation
bin110010001000…
…100011101101
3220201200210010
4302020203231
511331023003
61145403433
7216464415
oct62104355
926650703
1013142253
117466a73
124499579
132951ba7
141a61645
151249003
hexc888ed

13142253 has 4 divisors (see below), whose sum is σ = 17523008. Its totient is φ = 8761500.

The previous prime is 13142231. The next prime is 13142279. The reversal of 13142253 is 35224131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35224131 = 311741377.

It is not a de Polignac number, because 13142253 - 26 = 13142189 is a prime.

It is a super-3 number, since 3×131422533 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102253) 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 3 ways as a sum of consecutive naturals, for example, 2190373 + ... + 2190378.

It is an arithmetic number, because the mean of its divisors is an integer number (4380752).

Almost surely, 213142253 is an apocalyptic number.

It is an amenable number.

13142253 is a deficient number, since it is larger than the sum of its proper divisors (4380755).

13142253 is an equidigital number, since it uses as much as digits as its factorization.

13142253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380754.

The product of its digits is 720, while the sum is 21.

The square root of 13142253 is about 3625.2245447696. The cubic root of 13142253 is about 235.9880116959.

Adding to 13142253 its reverse (35224131), we get a palindrome (48366384).

The spelling of 13142253 in words is "thirteen million, one hundred forty-two thousand, two hundred fifty-three".

Divisors: 1 3 4380751 13142253