3212400402 has 12 divisors (see below), whose sum is σ = 6960200910. Its totient is φ = 1070800128.

The previous prime is 3212400391. The next prime is 3212400413. The reversal of 3212400402 is 2040042123.

3212400402 is a `hidden beast` number, since 3 + 21 + 240 + 0 + 402 = 666.

It is an interprime number because it is at equal distance from previous prime (3212400391) and next prime (3212400413).

It can be written as a sum of positive squares in only one way, i.e., 3196884681 + 15515721 = 56541^2 + 3939^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 178466689 = 3212400402 / (3 + 2 + 1 + 2 + 4 + 0 + 0 + 4 + 0 + 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 5 ways as a sum of consecutive naturals, for example, 89233327 + ... + 89233362.

Almost surely, 2^3212400402 is an apocalyptic number.

3212400402 is an abundant number, since it is smaller than the sum of its proper divisors (3747800508).

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

3212400402 is a wasteful number, since it uses less digits than its factorization.

3212400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178466697 (or 178466694 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3212400402 is about 56678.0416210723. The cubic root of 3212400402 is about 1475.5136239789.

Adding to 3212400402 its reverse (2040042123), we get a palindrome (5252442525).

The spelling of 3212400402 in words is "three billion, two hundred twelve million, four hundred thousand, four hundred two".