402332121 has 12 divisors (see below), whose sum is σ = 581616048. Its totient is φ = 268004664.

The previous prime is 402332083. The next prime is 402332131. The reversal of 402332121 is 121233204.

It is not a de Polignac number, because 402332121 - 2²³ = 393943513 is a prime.

It is a super-2 number, since 2×402332121² = 323742271176717282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402332094 and 402332103.

It is not an unprimeable number, because it can be changed into a prime (402332131) 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 11 ways as a sum of consecutive naturals, for example, 5875 + ... + 28968.

It is an arithmetic number, because the mean of its divisors is an integer number (48468004).

Almost surely, 2^402332121 is an apocalyptic number.

It is an amenable number.

402332121 is a deficient number, since it is larger than the sum of its proper divisors (179283927).

402332121 is a wasteful number, since it uses less digits than its factorization.

402332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36132 (or 36129 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 402332121 is about 20058.2182907655. The cubic root of 402332121 is about 738.2354603737.

Adding to 402332121 its reverse (121233204), we get a palindrome (523565325).

The spelling of 402332121 in words is "four hundred two million, three hundred thirty-two thousand, one hundred twenty-one".