42520431111 has 8 divisors (see below), whose sum is σ = 56694878064. Its totient is φ = 28346469120.

The previous prime is 42520431097. The next prime is 42520431139. The reversal of 42520431111 is 11113402524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42520431111 - 2²⁷ = 42386213383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42520431181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222871 + ... + 367031.

It is an arithmetic number, because the mean of its divisors is an integer number (7086859758).

Almost surely, 2^42520431111 is an apocalyptic number.

42520431111 is a deficient number, since it is larger than the sum of its proper divisors (14174446953).

42520431111 is a wasteful number, since it uses less digits than its factorization.

42520431111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242481.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 42520431111 its reverse (11113402524), we get a palindrome (53633833635).

The spelling of 42520431111 in words is "forty-two billion, five hundred twenty million, four hundred thirty-one thousand, one hundred eleven".