204120951 has 4 divisors (see below), whose sum is σ = 272161272. Its totient is φ = 136080632.

The previous prime is 204120949. The next prime is 204120979. The reversal of 204120951 is 159021402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204120951 - 2¹ = 204120949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204120941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34020156 + ... + 34020161.

It is an arithmetic number, because the mean of its divisors is an integer number (68040318).

Almost surely, 2^204120951 is an apocalyptic number.

204120951 is a deficient number, since it is larger than the sum of its proper divisors (68040321).

204120951 is an equidigital number, since it uses as much as digits as its factorization.

204120951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68040320.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 204120951 is about 14287.0903615817. The cubic root of 204120951 is about 588.7928502311.

The spelling of 204120951 in words is "two hundred four million, one hundred twenty thousand, nine hundred fifty-one".