220864042 has 16 divisors (see below), whose sum is σ = 384832512. Its totient is φ = 93103920.

The previous prime is 220864027. The next prime is 220864069. The reversal of 220864042 is 240468022.

It is a self number, because there is not a number n which added to its sum of digits gives 220864042.

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, 128458 + ... + 130165.

It is an arithmetic number, because the mean of its divisors is an integer number (24052032).

Almost surely, 2^220864042 is an apocalyptic number.

220864042 is a deficient number, since it is larger than the sum of its proper divisors (163968470).

220864042 is a wasteful number, since it uses less digits than its factorization.

220864042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258693.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 220864042 is about 14861.4952814311. The cubic root of 220864042 is about 604.4703531127.

The spelling of 220864042 in words is "two hundred twenty million, eight hundred sixty-four thousand, forty-two".