402020502 has 64 divisors (see below), whose sum is σ = 899754240. Its totient is φ = 118952064.

The previous prime is 402020483. The next prime is 402020537. The reversal of 402020502 is 205020204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223824 + ... + 225612.

It is an arithmetic number, because the mean of its divisors is an integer number (14058660).

Almost surely, 2^402020502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402020502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449877120).

402020502 is an abundant number, since it is smaller than the sum of its proper divisors (497733738).

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

402020502 is a wasteful number, since it uses less digits than its factorization.

402020502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 402020502 is about 20050.4489226551. The cubic root of 402020502 is about 738.0448155451.

Adding to 402020502 its reverse (205020204), we get a palindrome (607040706).

The spelling of 402020502 in words is "four hundred two million, twenty thousand, five hundred two".