402501426 has 16 divisors (see below), whose sum is σ = 840003264. Its totient is φ = 128333744.

The previous prime is 402501419. The next prime is 402501433. The reversal of 402501426 is 624105204.

It is an interprime number because it is at equal distance from previous prime (402501419) and next prime (402501433).

It is a junction number, because it is equal to n+sod(n) for n = 402501396 and 402501405.

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, 1458201 + ... + 1458476.

It is an arithmetic number, because the mean of its divisors is an integer number (52500204).

Almost surely, 2^402501426 is an apocalyptic number.

402501426 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

402501426 is an abundant number, since it is smaller than the sum of its proper divisors (437501838).

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

402501426 is a wasteful number, since it uses less digits than its factorization.

402501426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916705.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 402501426 is about 20062.4381868207. The cubic root of 402501426 is about 738.3389979076.

The spelling of 402501426 in words is "four hundred two million, five hundred one thousand, four hundred twenty-six".