42040204122 has 32 divisors (see below), whose sum is σ = 96368850432. Its totient is φ = 11976867504.

The previous prime is 42040204117. The next prime is 42040204133. The reversal of 42040204122 is 22140204024.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1427728 + ... + 1456875.

It is an arithmetic number, because the mean of its divisors is an integer number (3011526576).

Almost surely, 2^42040204122 is an apocalyptic number.

42040204122 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42040204122 is an abundant number, since it is smaller than the sum of its proper divisors (54328646310).

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

42040204122 is a wasteful number, since it uses less digits than its factorization.

42040204122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884962.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 42040204122 its reverse (22140204024), we get a palindrome (64180408146).

The spelling of 42040204122 in words is "forty-two billion, forty million, two hundred four thousand, one hundred twenty-two".