402012044 has 24 divisors (see below), whose sum is σ = 804464640. Its totient is φ = 172196496.

The previous prime is 402012029. The next prime is 402012059. The reversal of 402012044 is 440210204.

It is an interprime number because it is at equal distance from previous prime (402012029) and next prime (402012059).

It is a super-2 number, since 2×402012044² = 323227367042115872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78119 + ... + 83105.

It is an arithmetic number, because the mean of its divisors is an integer number (33519360).

Almost surely, 2^402012044 is an apocalyptic number.

It is an amenable number.

402012044 is an abundant number, since it is smaller than the sum of its proper divisors (402452596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402012044 is a wasteful number, since it uses less digits than its factorization.

402012044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7877 (or 7875 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 402012044 is about 20050.2380035749. The cubic root of 402012044 is about 738.0396396674.

Adding to 402012044 its reverse (440210204), we get a palindrome (842222248).

The spelling of 402012044 in words is "four hundred two million, twelve thousand, forty-four".