12440402 has 16 divisors (see below), whose sum is σ = 21154560. Its totient is φ = 5439312.

The previous prime is 12440381. The next prime is 12440411. The reversal of 12440402 is 20404421.

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, 12098 + ... + 13085.

It is an arithmetic number, because the mean of its divisors is an integer number (1322160).

Almost surely, 2^12440402 is an apocalyptic number.

12440402 is a deficient number, since it is larger than the sum of its proper divisors (8714158).

12440402 is a wasteful number, since it uses less digits than its factorization.

12440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25217.

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

The square root of 12440402 is about 3527.0954055710. The cubic root of 12440402 is about 231.7100147191.

Adding to 12440402 its reverse (20404421), we get a palindrome (32844823).

The spelling of 12440402 in words is "twelve million, four hundred forty thousand, four hundred two".