42520573961 has 32 divisors (see below), whose sum is σ = 48331883520. Its totient is φ = 37189267456.

The previous prime is 42520573943. The next prime is 42520573967. The reversal of 42520573961 is 16937502524.

It is not a de Polignac number, because 42520573961 - 2⁶ = 42520573897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42520573967) 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 31 ways as a sum of consecutive naturals, for example, 2509205 + ... + 2526093.

It is an arithmetic number, because the mean of its divisors is an integer number (1510371360).

Almost surely, 2^42520573961 is an apocalyptic number.

It is an amenable number.

42520573961 is a deficient number, since it is larger than the sum of its proper divisors (5811309559).

42520573961 is a wasteful number, since it uses less digits than its factorization.

42520573961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17113.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 42520573961 in words is "forty-two billion, five hundred twenty million, five hundred seventy-three thousand, nine hundred sixty-one".