204142431 has 8 divisors (see below), whose sum is σ = 279546544. Its totient is φ = 132416640.

The previous prime is 204142429. The next prime is 204142459. The reversal of 204142431 is 134241402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204142431 - 2¹ = 204142429 is a prime.

It is a super-2 number, since 2×204142431² = 83348264269179522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204142398 and 204142407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204142231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919450 + ... + 919671.

It is an arithmetic number, because the mean of its divisors is an integer number (34943318).

Almost surely, 2^204142431 is an apocalyptic number.

204142431 is a deficient number, since it is larger than the sum of its proper divisors (75404113).

204142431 is a wasteful number, since it uses less digits than its factorization.

204142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839161.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 204142431 is about 14287.8420693959. The cubic root of 204142431 is about 588.8135027360.

Adding to 204142431 its reverse (134241402), we get a palindrome (338383833).

The spelling of 204142431 in words is "two hundred four million, one hundred forty-two thousand, four hundred thirty-one".