402675121 has 4 divisors (see below), whose sum is σ = 416560500. Its totient is φ = 388789744.

The previous prime is 402675067. The next prime is 402675127. The reversal of 402675121 is 121576204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 306635121 + 96040000 = 17511^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 402675121 - 2²⁷ = 268457393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402675121.

It is not an unprimeable number, because it can be changed into a prime (402675127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6942646 + ... + 6942703.

It is an arithmetic number, because the mean of its divisors is an integer number (104140125).

Almost surely, 2^402675121 is an apocalyptic number.

It is an amenable number.

402675121 is a deficient number, since it is larger than the sum of its proper divisors (13885379).

402675121 is a wasteful number, since it uses less digits than its factorization.

402675121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13885378.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 402675121 is about 20066.7665805929. The cubic root of 402675121 is about 738.4451899529.

The spelling of 402675121 in words is "four hundred two million, six hundred seventy-five thousand, one hundred twenty-one".