501420120 has 32 divisors (see below), whose sum is σ = 1504260720. Its totient is φ = 133712000.

The previous prime is 501420109. The next prime is 501420167. The reversal of 501420120 is 21024105.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 501420120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2089131 + ... + 2089370.

Almost surely, 2^501420120 is an apocalyptic number.

It is an amenable number.

501420120 is an abundant number, since it is smaller than the sum of its proper divisors (1002840600).

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

501420120 is a wasteful number, since it uses less digits than its factorization.

501420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178515 (or 4178511 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 501420120 is about 22392.4121076761. The cubic root of 501420120 is about 794.4512490148.

Adding to 501420120 its reverse (21024105), we get a palindrome (522444225).

The spelling of 501420120 in words is "five hundred one million, four hundred twenty thousand, one hundred twenty".