402428117 has 8 divisors (see below), whose sum is σ = 495296256. Its totient is φ = 318404592.

The previous prime is 402428111. The next prime is 402428153. The reversal of 402428117 is 711824204.

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

It is a cyclic number.

It is not a de Polignac number, because 402428117 - 2⁴ = 402428101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402428117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402428111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2211053 + ... + 2211234.

It is an arithmetic number, because the mean of its divisors is an integer number (61912032).

Almost surely, 2^402428117 is an apocalyptic number.

It is an amenable number.

402428117 is a deficient number, since it is larger than the sum of its proper divisors (92868139).

402428117 is a wasteful number, since it uses less digits than its factorization.

402428117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422307.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 402428117 is about 20060.6110824172. The cubic root of 402428117 is about 738.2941697599.

The spelling of 402428117 in words is "four hundred two million, four hundred twenty-eight thousand, one hundred seventeen".