402242330021 has 16 divisors (see below), whose sum is σ = 461565137280. Its totient is φ = 343384842240.

The previous prime is 402242329999. The next prime is 402242330029. The reversal of 402242330021 is 120033242204.

It is a cyclic number.

It is not a de Polignac number, because 402242330021 - 2¹⁰ = 402242328997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402242330029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15694265 + ... + 15719873.

It is an arithmetic number, because the mean of its divisors is an integer number (28847821080).

Almost surely, 2^402242330021 is an apocalyptic number.

It is an amenable number.

402242330021 is a deficient number, since it is larger than the sum of its proper divisors (59322807259).

402242330021 is a wasteful number, since it uses less digits than its factorization.

402242330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34604.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 402242330021 its reverse (120033242204), we get a palindrome (522275572225).

The spelling of 402242330021 in words is "four hundred two billion, two hundred forty-two million, three hundred thirty thousand, twenty-one".