402132212402 has 16 divisors (see below), whose sum is σ = 617699143512. Its totient is φ = 196271013120.

The previous prime is 402132212387. The next prime is 402132212407. The reversal of 402132212402 is 204212231204.

It can be written as a sum of positive squares in 4 ways, for example, as 384138404521 + 17993807881 = 619789^2 + 134141^2 .

It is not an unprimeable number, because it can be changed into a prime (402132212407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9607799 + ... + 9649562.

Almost surely, 2^402132212402 is an apocalyptic number.

402132212402 is a deficient number, since it is larger than the sum of its proper divisors (215566931110).

402132212402 is a wasteful number, since it uses less digits than its factorization.

402132212402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19257613.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 402132212402 its reverse (204212231204), we get a palindrome (606344443606).

The spelling of 402132212402 in words is "four hundred two billion, one hundred thirty-two million, two hundred twelve thousand, four hundred two".