231442042 has 8 divisors (see below), whose sum is σ = 373867956. Its totient is φ = 106819392.

The previous prime is 231442033. The next prime is 231442049. The reversal of 231442042 is 240244132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 182007081 + 49434961 = 13491^2 + 7031^2 .

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

It is not an unprimeable number, because it can be changed into a prime (231442049) 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, 4450783 + ... + 4450834.

Almost surely, 2^231442042 is an apocalyptic number.

231442042 is a deficient number, since it is larger than the sum of its proper divisors (142425914).

231442042 is a wasteful number, since it uses less digits than its factorization.

231442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8901632.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 231442042 is about 15213.2193174226. The cubic root of 231442042 is about 613.9703766827.

Adding to 231442042 its reverse (240244132), we get a palindrome (471686174).

The spelling of 231442042 in words is "two hundred thirty-one million, four hundred forty-two thousand, forty-two".