402223042 has 24 divisors (see below), whose sum is σ = 665671284. Its totient is φ = 182130624.

The previous prime is 402223021. The next prime is 402223051. The reversal of 402223042 is 240322204.

It can be written as a sum of positive squares in 6 ways, for example, as 31236921 + 370986121 = 5589^2 + 19261^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6688 + ... + 29140.

Almost surely, 2^402223042 is an apocalyptic number.

402223042 is a deficient number, since it is larger than the sum of its proper divisors (263448242).

402223042 is a wasteful number, since it uses less digits than its factorization.

402223042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22534 (or 22521 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 402223042 is about 20055.4990463962. The cubic root of 402223042 is about 738.1687383299.

Adding to 402223042 its reverse (240322204), we get a palindrome (642545246).

It can be divided in two parts, 40222 and 3042, that added together give a square (43264 = 208²).

The spelling of 402223042 in words is "four hundred two million, two hundred twenty-three thousand, forty-two".