204457142 has 4 divisors (see below), whose sum is σ = 306685716. Its totient is φ = 102228570.

The previous prime is 204457117. The next prime is 204457207. The reversal of 204457142 is 241754402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241754402 = 2 ⋅120877201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51114284 + ... + 51114287.

It is an arithmetic number, because the mean of its divisors is an integer number (76671429).

Almost surely, 2^204457142 is an apocalyptic number.

204457142 is a deficient number, since it is larger than the sum of its proper divisors (102228574).

204457142 is a wasteful number, since it uses less digits than its factorization.

204457142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102228573.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 204457142 is about 14298.8510727261. The cubic root of 204457142 is about 589.1159238490.

The spelling of 204457142 in words is "two hundred four million, four hundred fifty-seven thousand, one hundred forty-two".