12402354136 has 32 divisors (see below), whose sum is σ = 24089439600. Its totient is φ = 5979093120.

The previous prime is 12402354073. The next prime is 12402354169. The reversal of 12402354136 is 63145320421.

It is a super-2 number, since 2×12402354136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12402354098 and 12402354107.

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, 133591 + ... + 206521.

Almost surely, 2^12402354136 is an apocalyptic number.

It is an amenable number.

12402354136 is a deficient number, since it is larger than the sum of its proper divisors (11687085464).

12402354136 is a wasteful number, since it uses less digits than its factorization.

12402354136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73699 (or 73695 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 12402354136 its reverse (63145320421), we get a palindrome (75547674557).

The spelling of 12402354136 in words is "twelve billion, four hundred two million, three hundred fifty-four thousand, one hundred thirty-six".