431142242 has 4 divisors (see below), whose sum is σ = 646713366. Its totient is φ = 215571120.

The previous prime is 431142223. The next prime is 431142259. The reversal of 431142242 is 242241134.

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

It can be written as a sum of positive squares in only one way, i.e., 319015321 + 112126921 = 17861^2 + 10589^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107785559 + ... + 107785562.

Almost surely, 2^431142242 is an apocalyptic number.

431142242 is a deficient number, since it is larger than the sum of its proper divisors (215571124).

431142242 is a wasteful number, since it uses less digits than its factorization.

431142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215571123.

The product of its digits is 1536, while the sum is 23.

The square root of 431142242 is about 20763.9649874488. The cubic root of 431142242 is about 755.4519709478.

Adding to 431142242 its reverse (242241134), we get a palindrome (673383376).

The spelling of 431142242 in words is "four hundred thirty-one million, one hundred forty-two thousand, two hundred forty-two".