204224139 has 32 divisors (see below), whose sum is σ = 346467840. Its totient is φ = 116466336.

The previous prime is 204224129. The next prime is 204224149. The reversal of 204224139 is 931422402.

It is an interprime number because it is at equal distance from previous prime (204224129) and next prime (204224149).

It is not a de Polignac number, because 204224139 - 2⁷ = 204224011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204224129) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 148057 + ... + 149429.

It is an arithmetic number, because the mean of its divisors is an integer number (10827120).

Almost surely, 2^204224139 is an apocalyptic number.

204224139 is a deficient number, since it is larger than the sum of its proper divisors (142243701).

204224139 is a wasteful number, since it uses less digits than its factorization.

204224139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2170 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 204224139 is about 14290.7011374530. The cubic root of 204224139 is about 588.8920497846.

The spelling of 204224139 in words is "two hundred four million, two hundred twenty-four thousand, one hundred thirty-nine".