42578668042 has 16 divisors (see below), whose sum is σ = 63949677120. Its totient is φ = 21262128768.

The previous prime is 42578668019. The next prime is 42578668043. The reversal of 42578668042 is 24086687524.

42578668042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42578668042² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42578668043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7266778 + ... + 7272634.

It is an arithmetic number, because the mean of its divisors is an integer number (3996854820).

Almost surely, 2^42578668042 is an apocalyptic number.

42578668042 is a deficient number, since it is larger than the sum of its proper divisors (21371009078).

42578668042 is a wasteful number, since it uses less digits than its factorization.

42578668042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9885.

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 42578668042 in words is "forty-two billion, five hundred seventy-eight million, six hundred sixty-eight thousand, forty-two".