321404042 has 8 divisors (see below), whose sum is σ = 498730500. Its totient is φ = 155160544.

The previous prime is 321404033. The next prime is 321404051. The reversal of 321404042 is 240404123.

It is an interprime number because it is at equal distance from previous prime (321404033) and next prime (321404051).

It can be written as a sum of positive squares in 2 ways, for example, as 296493961 + 24910081 = 17219^2 + 4991^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2770667 + ... + 2770782.

Almost surely, 2^321404042 is an apocalyptic number.

321404042 is a deficient number, since it is larger than the sum of its proper divisors (177326458).

321404042 is a wasteful number, since it uses less digits than its factorization.

321404042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5541480.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 321404042 is about 17927.7450338853. The cubic root of 321404042 is about 684.9892850012.

Adding to 321404042 its reverse (240404123), we get a palindrome (561808165).

The spelling of 321404042 in words is "three hundred twenty-one million, four hundred four thousand, forty-two".