402868446121 has 4 divisors (see below), whose sum is σ = 404913463812. Its totient is φ = 400823428432.

The previous prime is 402868446119. The next prime is 402868446209. The reversal of 402868446121 is 121644868204.

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 391952375721 + 10916070400 = 626061^2 + 104480^2 .

It is a cyclic number.

It is not a de Polignac number, because 402868446121 - 2¹ = 402868446119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402868456121) 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, 1022508550 + ... + 1022508943.

It is an arithmetic number, because the mean of its divisors is an integer number (101228365953).

Almost surely, 2^402868446121 is an apocalyptic number.

It is an amenable number.

402868446121 is a deficient number, since it is larger than the sum of its proper divisors (2045017691).

402868446121 is a wasteful number, since it uses less digits than its factorization.

402868446121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045017690.

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 402868446121 in words is "four hundred two billion, eight hundred sixty-eight million, four hundred forty-six thousand, one hundred twenty-one".