402332120321 has 4 divisors (see below), whose sum is σ = 425998715652. Its totient is φ = 378665524992.

The previous prime is 402332120299. The next prime is 402332120329. The reversal of 402332120321 is 123021233204.

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 243482046721 + 158850073600 = 493439^2 + 398560^2 .

It is a cyclic number.

It is not a de Polignac number, because 402332120321 - 2¹⁴ = 402332103937 is a prime.

It is a super-2 number, since 2×402332120321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402332120329) 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, 11833297640 + ... + 11833297673.

It is an arithmetic number, because the mean of its divisors is an integer number (106499678913).

Almost surely, 2^402332120321 is an apocalyptic number.

It is an amenable number.

402332120321 is a deficient number, since it is larger than the sum of its proper divisors (23666595331).

402332120321 is a wasteful number, since it uses less digits than its factorization.

402332120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23666595330.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 402332120321 its reverse (123021233204), we get a palindrome (525353353525).

The spelling of 402332120321 in words is "four hundred two billion, three hundred thirty-two million, one hundred twenty thousand, three hundred twenty-one".