12400902 has 12 divisors (see below), whose sum is σ = 26868660. Its totient is φ = 4133628.

The previous prime is 12400897. The next prime is 12400907. The reversal of 12400902 is 20900421.

12400902 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12400897) and next prime (12400907).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 688939 = 12400902 / (1 + 2 + 4 + 0 + 0 + 9 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400907) 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, 344452 + ... + 344487.

It is an arithmetic number, because the mean of its divisors is an integer number (2239055).

Almost surely, 2^12400902 is an apocalyptic number.

12400902 is an abundant number, since it is smaller than the sum of its proper divisors (14467758).

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

12400902 is a wasteful number, since it uses less digits than its factorization.

12400902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688947 (or 688944 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12400902 is about 3521.4914453964. The cubic root of 12400902 is about 231.4645175728.

The spelling of 12400902 in words is "twelve million, four hundred thousand, nine hundred two".