402620343412 has 24 divisors (see below), whose sum is σ = 807002727104. Its totient is φ = 172173995712.

The previous prime is 402620343401. The next prime is 402620343427. The reversal of 402620343412 is 214343026204.

It is a congruent number.

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, 15719478 + ... + 15745069.

Almost surely, 2^402620343412 is an apocalyptic number.

It is an amenable number.

402620343412 is an abundant number, since it is smaller than the sum of its proper divisors (404382383692).

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

402620343412 is a wasteful number, since it uses less digits than its factorization.

402620343412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31465015 (or 31465013 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 402620343412 its reverse (214343026204), we get a palindrome (616963369616).

The spelling of 402620343412 in words is "four hundred two billion, six hundred twenty million, three hundred forty-three thousand, four hundred twelve".