42561060903 has 32 divisors (see below), whose sum is σ = 66396960000. Its totient is φ = 26870571936.

The previous prime is 42561060887. The next prime is 42561060929. The reversal of 42561060903 is 30906016524.

It is a happy number.

42561060903 is a `hidden beast` number, since 4 + 2 + 561 + 0 + 6 + 0 + 90 + 3 = 666.

It is not a de Polignac number, because 42561060903 - 2⁴ = 42561060887 is a prime.

It is a super-3 number, since 3×42561060903³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42561040903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1493593 + ... + 1521821.

It is an arithmetic number, because the mean of its divisors is an integer number (2074905000).

Almost surely, 2^42561060903 is an apocalyptic number.

42561060903 is a deficient number, since it is larger than the sum of its proper divisors (23835899097).

42561060903 is a wasteful number, since it uses less digits than its factorization.

42561060903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31196 (or 31190 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 42561060903 in words is "forty-two billion, five hundred sixty-one million, sixty thousand, nine hundred three".