402233121 has 10 divisors (see below), whose sum is σ = 600866882. Its totient is φ = 268155360.

The previous prime is 402233089. The next prime is 402233123. The reversal of 402233121 is 121332204.

It can be written as a sum of positive squares in only one way, i.e., 372683025 + 29550096 = 19305^2 + 5436^2 .

It is not a de Polignac number, because 402233121 - 2⁵ = 402233089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402233094 and 402233103.

It is not an unprimeable number, because it can be changed into a prime (402233123) 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 9 ways as a sum of consecutive naturals, for example, 2482840 + ... + 2483001.

Almost surely, 2^402233121 is an apocalyptic number.

It is an amenable number.

402233121 is a deficient number, since it is larger than the sum of its proper divisors (198633761).

402233121 is an equidigital number, since it uses as much as digits as its factorization.

402233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4965853 (or 4965844 counting only the distinct ones).

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

The square root of 402233121 is about 20055.7503225384. The cubic root of 402233121 is about 738.1749040139.

Adding to 402233121 its reverse (121332204), we get a palindrome (523565325).

The spelling of 402233121 in words is "four hundred two million, two hundred thirty-three thousand, one hundred twenty-one".