402044212 has 12 divisors (see below), whose sum is σ = 704334820. Its totient is φ = 200805696.

The previous prime is 402044191. The next prime is 402044213. The reversal of 402044212 is 212440204.

It can be written as a sum of positive squares in 2 ways, for example, as 8259876 + 393784336 = 2874^2 + 19844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402044212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402044213) 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, 49887 + ... + 57382.

Almost surely, 2^402044212 is an apocalyptic number.

It is an amenable number.

402044212 is a deficient number, since it is larger than the sum of its proper divisors (302290608).

402044212 is a wasteful number, since it uses less digits than its factorization.

402044212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108210 (or 108208 counting only the distinct ones).

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

The square root of 402044212 is about 20051.0401725197. The cubic root of 402044212 is about 738.0593245055.

Adding to 402044212 its reverse (212440204), we get a palindrome (614484416).

The spelling of 402044212 in words is "four hundred two million, forty-four thousand, two hundred twelve".