402120500 has 96 divisors (see below), whose sum is σ = 930908160. Its totient is φ = 151430400.

The previous prime is 402120473. The next prime is 402120517. The reversal of 402120500 is 5021204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 839261 + ... + 839739.

It is an arithmetic number, because the mean of its divisors is an integer number (9696960).

Almost surely, 2^402120500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402120500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465454080).

402120500 is an abundant number, since it is smaller than the sum of its proper divisors (528787660).

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

402120500 is a wasteful number, since it uses less digits than its factorization.

402120500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 402120500 is about 20052.9424274843. The cubic root of 402120500 is about 738.1060038732.

Adding to 402120500 its reverse (5021204), we get a palindrome (407141704).

The spelling of 402120500 in words is "four hundred two million, one hundred twenty thousand, five hundred".