252140431405 has 16 divisors (see below), whose sum is σ = 303708052224. Its totient is φ = 200952884160.

The previous prime is 252140431381. The next prime is 252140431447. The reversal of 252140431405 is 504134041252.

It is a de Polignac number, because none of the positive numbers 2^k-252140431405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13662114 + ... + 13680556.

It is an arithmetic number, because the mean of its divisors is an integer number (18981753264).

Almost surely, 2^252140431405 is an apocalyptic number.

It is an amenable number.

252140431405 is a deficient number, since it is larger than the sum of its proper divisors (51567620819).

252140431405 is a wasteful number, since it uses less digits than its factorization.

252140431405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28596.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 252140431405 its reverse (504134041252), we get a palindrome (756274472657).

The spelling of 252140431405 in words is "two hundred fifty-two billion, one hundred forty million, four hundred thirty-one thousand, four hundred five".