42521015135 has 32 divisors (see below), whose sum is σ = 54363052800. Its totient is φ = 31835738880.

The previous prime is 42521015123. The next prime is 42521015143. The reversal of 42521015135 is 53151012524.

It is not a de Polignac number, because 42521015135 - 2²² = 42516820831 is a prime.

It is a super-2 number, since 2×42521015135² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42521015098 and 42521015107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16798820 + ... + 16801350.

It is an arithmetic number, because the mean of its divisors is an integer number (1698845400).

Almost surely, 2^42521015135 is an apocalyptic number.

42521015135 is a deficient number, since it is larger than the sum of its proper divisors (11842037665).

42521015135 is a wasteful number, since it uses less digits than its factorization.

42521015135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 42521015135 its reverse (53151012524), we get a palindrome (95672027659).

The spelling of 42521015135 in words is "forty-two billion, five hundred twenty-one million, fifteen thousand, one hundred thirty-five".