13142135252 has 24 divisors (see below), whose sum is σ = 23079676200. Its totient is φ = 6547968000.

The previous prime is 13142135239. The next prime is 13142135309. The reversal of 13142135252 is 25253124131.

It can be written as a sum of positive squares in 4 ways, for example, as 8169628996 + 4972506256 = 90386^2 + 70516^2 .

It is a super-2 number, since 2×13142135252² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4187828 + ... + 4190964.

It is an arithmetic number, because the mean of its divisors is an integer number (961653175).

Almost surely, 2^13142135252 is an apocalyptic number.

It is an amenable number.

13142135252 is a deficient number, since it is larger than the sum of its proper divisors (9937540948).

13142135252 is a wasteful number, since it uses less digits than its factorization.

13142135252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6491 (or 6489 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

Adding to 13142135252 its reverse (25253124131), we get a palindrome (38395259383).

The spelling of 13142135252 in words is "thirteen billion, one hundred forty-two million, one hundred thirty-five thousand, two hundred fifty-two".