402044122 has 16 divisors (see below), whose sum is σ = 606666600. Its totient is φ = 199825920.

The previous prime is 402044119. The next prime is 402044131. The reversal of 402044122 is 221440204.

It can be written as a sum of positive squares in 4 ways, for example, as 270964521 + 131079601 = 16461^2 + 11449^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402044122.

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 7 ways as a sum of consecutive naturals, for example, 397954 + ... + 398962.

Almost surely, 2^402044122 is an apocalyptic number.

402044122 is a deficient number, since it is larger than the sum of its proper divisors (204622478).

402044122 is a wasteful number, since it uses less digits than its factorization.

402044122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 402044122 is about 20051.0379282470. The cubic root of 402044122 is about 738.0592694325.

Adding to 402044122 its reverse (221440204), we get a palindrome (623484326).

The spelling of 402044122 in words is "four hundred two million, forty-four thousand, one hundred twenty-two".