402812451 has 12 divisors (see below), whose sum is σ = 597566112. Its totient is φ = 261283536.

The previous prime is 402812429. The next prime is 402812453. The reversal of 402812451 is 154218204.

It is not a de Polignac number, because 402812451 - 2⁶ = 402812387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402812453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 604491 + ... + 605156.

It is an arithmetic number, because the mean of its divisors is an integer number (49797176).

Almost surely, 2^402812451 is an apocalyptic number.

402812451 is a deficient number, since it is larger than the sum of its proper divisors (194753661).

402812451 is a wasteful number, since it uses less digits than its factorization.

402812451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209690 (or 1209687 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 402812451 is about 20070.1881157103. The cubic root of 402812451 is about 738.5291278855.

The spelling of 402812451 in words is "four hundred two million, eight hundred twelve thousand, four hundred fifty-one".