42122615864 has 32 divisors (see below), whose sum is σ = 90271948800. Its totient is φ = 18050709600.

The previous prime is 42122615803. The next prime is 42122615867. The reversal of 42122615864 is 46851622124.

It is a super-2 number, since 2×42122615864² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42122615867) 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 7 ways as a sum of consecutive naturals, for example, 614297 + ... + 679415.

It is an arithmetic number, because the mean of its divisors is an integer number (2820998400).

Almost surely, 2^42122615864 is an apocalyptic number.

It is an amenable number.

42122615864 is an abundant number, since it is smaller than the sum of its proper divisors (48149332936).

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

42122615864 is a wasteful number, since it uses less digits than its factorization.

42122615864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76683 (or 76679 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The spelling of 42122615864 in words is "forty-two billion, one hundred twenty-two million, six hundred fifteen thousand, eight hundred sixty-four".