12402040202 has 12 divisors (see below), whose sum is σ = 19633701906. Its totient is φ = 5874650280.

The previous prime is 12402040201. The next prime is 12402040213. The reversal of 12402040202 is 20204020421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11601659521 + 800380681 = 107711^2 + 28291^2 .

It is not an unprimeable number, because it can be changed into a prime (12402040201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8587949 + ... + 8589392.

Almost surely, 2^12402040202 is an apocalyptic number.

12402040202 is a deficient number, since it is larger than the sum of its proper divisors (7231661704).

12402040202 is a wasteful number, since it uses less digits than its factorization.

12402040202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17177381 (or 17177362 counting only the distinct ones).

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

Adding to 12402040202 its reverse (20204020421), we get a palindrome (32606060623).

The spelling of 12402040202 in words is "twelve billion, four hundred two million, forty thousand, two hundred two".