12900426 has 48 divisors (see below), whose sum is σ = 32749920. Its totient is φ = 3349920.

The previous prime is 12900403. The next prime is 12900443. The reversal of 12900426 is 62400921.

It is a junction number, because it is equal to n+sod(n) for n = 12900396 and 12900405.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1240 + ... + 5228.

It is an arithmetic number, because the mean of its divisors is an integer number (682290).

Almost surely, 2^12900426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12900426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16374960).

12900426 is an abundant number, since it is smaller than the sum of its proper divisors (19849494).

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

12900426 is a wasteful number, since it uses less digits than its factorization.

12900426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019 (or 4012 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12900426 is about 3591.7163028279. The cubic root of 12900426 is about 234.5315914964.

The spelling of 12900426 in words is "twelve million, nine hundred thousand, four hundred twenty-six".