402231121 has 8 divisors (see below), whose sum is σ = 425304320. Its totient is φ = 379348272.

The previous prime is 402231119. The next prime is 402231157. The reversal of 402231121 is 121132204.

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 402231121 - 2¹ = 402231119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402231095 and 402231104.

It is not an unprimeable number, because it can be changed into a prime (402231191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43230 + ... + 51703.

It is an arithmetic number, because the mean of its divisors is an integer number (53163040).

Almost surely, 2^402231121 is an apocalyptic number.

It is an amenable number.

402231121 is a deficient number, since it is larger than the sum of its proper divisors (23073199).

402231121 is a wasteful number, since it uses less digits than its factorization.

402231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95175.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 402231121 is about 20055.7004614648. The cubic root of 402231121 is about 738.1736805507.

Adding to 402231121 its reverse (121132204), we get a palindrome (523363325).

The spelling of 402231121 in words is "four hundred two million, two hundred thirty-one thousand, one hundred twenty-one".