12401900 has 54 divisors (see below), whose sum is σ = 31318308. Its totient is φ = 4250400.

The previous prime is 12401887. The next prime is 12401903. The reversal of 12401900 is 910421.

It is a happy number.

It is a super-2 number, since 2×12401900² = 307614247220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12401903) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3635 + ... + 6165.

Almost surely, 2^12401900 is an apocalyptic number.

12401900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12401900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15659154).

12401900 is an abundant number, since it is smaller than the sum of its proper divisors (18916408).

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

12401900 is a wasteful number, since it uses less digits than its factorization.

12401900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12401900 is about 3521.6331438695. The cubic root of 12401900 is about 231.4707266747.

The spelling of 12401900 in words is "twelve million, four hundred one thousand, nine hundred".