402156426 has 48 divisors (see below), whose sum is σ = 976325184. Its totient is φ = 109904256.

The previous prime is 402156409. The next prime is 402156431. The reversal of 402156426 is 624651204.

It is a junction number, because it is equal to n+sod(n) for n = 402156393 and 402156402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22975 + ... + 36498.

It is an arithmetic number, because the mean of its divisors is an integer number (20340108).

Almost surely, 2^402156426 is an apocalyptic number.

402156426 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

402156426 is an abundant number, since it is smaller than the sum of its proper divisors (574168758).

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

402156426 is a wasteful number, since it uses less digits than its factorization.

402156426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59515 (or 59508 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 402156426 is about 20053.8381862426. The cubic root of 402156426 is about 738.1279843547.

The spelling of 402156426 in words is "four hundred two million, one hundred fifty-six thousand, four hundred twenty-six".