420502502 has 16 divisors (see below), whose sum is σ = 721144320. Its totient is φ = 180144648.

The previous prime is 420502451. The next prime is 420502513. The reversal of 420502502 is 205205024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48149 + ... + 56207.

It is an arithmetic number, because the mean of its divisors is an integer number (45071520).

Almost surely, 2^420502502 is an apocalyptic number.

420502502 is a deficient number, since it is larger than the sum of its proper divisors (300641818).

420502502 is a wasteful number, since it uses less digits than its factorization.

420502502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11795.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 420502502 is about 20506.1576605663. The cubic root of 420502502 is about 749.1857842420.

Adding to 420502502 its reverse (205205024), we get a palindrome (625707526).

The spelling of 420502502 in words is "four hundred twenty million, five hundred two thousand, five hundred two".