12321426402 has 32 divisors (see below), whose sum is σ = 27451382400. Its totient is φ = 4096576944.

The previous prime is 12321426389. The next prime is 12321426419. The reversal of 12321426402 is 20462412321.

12321426402 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 14 + 2 + 640 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272278 + ... + 314289.

It is an arithmetic number, because the mean of its divisors is an integer number (857855700).

Almost surely, 2^12321426402 is an apocalyptic number.

12321426402 is an abundant number, since it is smaller than the sum of its proper divisors (15129955998).

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

12321426402 is a wasteful number, since it uses less digits than its factorization.

12321426402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586967 (or 586961 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 12321426402 its reverse (20462412321), we get a palindrome (32783838723).

The spelling of 12321426402 in words is "twelve billion, three hundred twenty-one million, four hundred twenty-six thousand, four hundred two".