42040844860840 has 64 divisors (see below), whose sum is σ = 108149758329600. Its totient is φ = 14408040127488.

The previous prime is 42040844860811. The next prime is 42040844860853. The reversal of 42040844860840 is 4806844804024.

It is a super-2 number, since 2×42040844860840² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30383620 + ... + 31737139.

It is an arithmetic number, because the mean of its divisors is an integer number (1689839973900).

Almost surely, 2^{42040844860840} is an apocalyptic number.

42040844860840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42040844860840 is an abundant number, since it is smaller than the sum of its proper divisors (66108913468760).

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

42040844860840 is a wasteful number, since it uses less digits than its factorization.

42040844860840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62123194 (or 62123190 counting only the distinct ones).

The product of its (nonzero) digits is 6291456, while the sum is 52.

The spelling of 42040844860840 in words is "forty-two trillion, forty billion, eight hundred forty-four million, eight hundred sixty thousand, eight hundred forty".