402074321 has 16 divisors (see below), whose sum is σ = 451137600. Its totient is φ = 355238400.

The previous prime is 402074311. The next prime is 402074329. The reversal of 402074321 is 123470204.

It is not a de Polignac number, because 402074321 - 2¹⁴ = 402057937 is a prime.

It is a super-2 number, since 2×402074321² = 323327519215222082, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402074329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54281 + ... + 61241.

It is an arithmetic number, because the mean of its divisors is an integer number (28196100).

Almost surely, 2^402074321 is an apocalyptic number.

It is an amenable number.

402074321 is a deficient number, since it is larger than the sum of its proper divisors (49063279).

402074321 is a wasteful number, since it uses less digits than its factorization.

402074321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7120.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 402074321 is about 20051.7909673924. The cubic root of 402074321 is about 738.0777484108.

The spelling of 402074321 in words is "four hundred two million, seventy-four thousand, three hundred twenty-one".