12402940 has 24 divisors (see below), whose sum is σ = 28414512. Its totient is φ = 4510080.

The previous prime is 12402931. The next prime is 12402941. The reversal of 12402940 is 4920421.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27969 + ... + 28408.

It is an arithmetic number, because the mean of its divisors is an integer number (1183938).

Almost surely, 2^12402940 is an apocalyptic number.

12402940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12402940 is an abundant number, since it is smaller than the sum of its proper divisors (16011572).

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

12402940 is a wasteful number, since it uses less digits than its factorization.

12402940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56397 (or 56395 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12402940 is about 3521.7807995388. The cubic root of 12402940 is about 231.4771967270.

The spelling of 12402940 in words is "twelve million, four hundred two thousand, nine hundred forty".