402064251 has 8 divisors (see below), whose sum is σ = 539081280. Its totient is φ = 266545032.

The previous prime is 402064241. The next prime is 402064277. The reversal of 402064251 is 152460204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402064251 - 2¹¹ = 402062203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402064211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373825 + ... + 374898.

It is an arithmetic number, because the mean of its divisors is an integer number (67385160).

Almost surely, 2^402064251 is an apocalyptic number.

402064251 is a deficient number, since it is larger than the sum of its proper divisors (137017029).

402064251 is a wasteful number, since it uses less digits than its factorization.

402064251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748905.

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

The square root of 402064251 is about 20051.5398660552. The cubic root of 402064251 is about 738.0715866105.

The spelling of 402064251 in words is "four hundred two million, sixty-four thousand, two hundred fifty-one".