402502001 has 8 divisors (see below), whose sum is σ = 458184384. Its totient is φ = 350001520.

The previous prime is 402501997. The next prime is 402502033. The reversal of 402502001 is 100205204.

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

It is not a de Polignac number, because 402502001 - 2² = 402501997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402502201) 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, 795206 + ... + 795711.

It is an arithmetic number, because the mean of its divisors is an integer number (57273048).

Almost surely, 2^402502001 is an apocalyptic number.

It is an amenable number.

402502001 is a deficient number, since it is larger than the sum of its proper divisors (55682383).

402502001 is a wasteful number, since it uses less digits than its factorization.

402502001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590951.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 402502001 is about 20062.4525170778. The cubic root of 402502001 is about 738.3393494961.

Adding to 402502001 its reverse (100205204), we get a palindrome (502707205).

The spelling of 402502001 in words is "four hundred two million, five hundred two thousand, one".