402530002120 has 96 divisors (see below), whose sum is σ = 968802912000. Its totient is φ = 150429476736.

The previous prime is 402530002081. The next prime is 402530002141. The reversal of 402530002120 is 21200035204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688681 + ... + 1131079.

It is an arithmetic number, because the mean of its divisors is an integer number (10091697000).

Almost surely, 2^402530002120 is an apocalyptic number.

402530002120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402530002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484401456000).

402530002120 is an abundant number, since it is smaller than the sum of its proper divisors (566272909880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402530002120 is a wasteful number, since it uses less digits than its factorization.

402530002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442499 (or 442472 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 402530002120 its reverse (21200035204), we get a palindrome (423730037324).

The spelling of 402530002120 in words is "four hundred two billion, five hundred thirty million, two thousand, one hundred twenty".