22500042 has 16 divisors (see below), whose sum is σ = 45634752. Its totient is φ = 7394240.

The previous prime is 22500029. The next prime is 22500053. The reversal of 22500042 is 24000522.

It is a junction number, because it is equal to n+sod(n) for n = 22499994 and 22500030.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25983 + ... + 26834.

It is an arithmetic number, because the mean of its divisors is an integer number (2852172).

Almost surely, 2^22500042 is an apocalyptic number.

22500042 is an abundant number, since it is smaller than the sum of its proper divisors (23134710).

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

22500042 is a wasteful number, since it uses less digits than its factorization.

22500042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52893.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22500042 is about 4743.4209174392. The cubic root of 22500042 is about 282.3109843243.

Adding to 22500042 its reverse (24000522), we get a palindrome (46500564).

The spelling of 22500042 in words is "twenty-two million, five hundred thousand, forty-two".