402044242 has 8 divisors (see below), whose sum is σ = 609283836. Its totient is φ = 198949632.

The previous prime is 402044219. The next prime is 402044243. The reversal of 402044242 is 242440204.

It can be written as a sum of positive squares in 2 ways, for example, as 398361681 + 3682561 = 19959^2 + 1919^2 .

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 (402044243) 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, 1036003 + ... + 1036390.

Almost surely, 2^402044242 is an apocalyptic number.

402044242 is a deficient number, since it is larger than the sum of its proper divisors (207239594).

402044242 is a wasteful number, since it uses less digits than its factorization.

402044242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072492.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 402044242 is about 20051.0409206106. The cubic root of 402044242 is about 738.0593428631.

Adding to 402044242 its reverse (242440204), we get a palindrome (644484446).

The spelling of 402044242 in words is "four hundred two million, forty-four thousand, two hundred forty-two".