42021865992 has 32 divisors (see below), whose sum is σ = 105192758880. Its totient is φ = 13988876160.

The previous prime is 42021865981. The next prime is 42021866009. The reversal of 42021865992 is 29956812024.

It is a super-2 number, since 2×42021865992² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132138 + ... + 1168665.

It is an arithmetic number, because the mean of its divisors is an integer number (3287273715).

Almost surely, 2^42021865992 is an apocalyptic number.

It is an amenable number.

42021865992 is an abundant number, since it is smaller than the sum of its proper divisors (63170892888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42021865992 is a wasteful number, since it uses less digits than its factorization.

42021865992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301573 (or 2301569 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 42021865992 in words is "forty-two billion, twenty-one million, eight hundred sixty-five thousand, nine hundred ninety-two".