42015253232431 has 16 divisors (see below), whose sum is σ = 43375415837760. Its totient is φ = 40679292326400.

The previous prime is 42015253232417. The next prime is 42015253232453. The reversal of 42015253232431 is 13423235251024.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42015253232431 is a prime.

It is a super-2 number, since 2×42015253232431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42015253232411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13945995 + ... + 16688956.

It is an arithmetic number, because the mean of its divisors is an integer number (2710963489860).

Almost surely, 2^{42015253232431} is an apocalyptic number.

42015253232431 is a deficient number, since it is larger than the sum of its proper divisors (1360162605329).

42015253232431 is a wasteful number, since it uses less digits than its factorization.

42015253232431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30635346.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 42015253232431 its reverse (13423235251024), we get a palindrome (55438488483455).

The spelling of 42015253232431 in words is "forty-two trillion, fifteen billion, two hundred fifty-three million, two hundred thirty-two thousand, four hundred thirty-one".