501742120 has 64 divisors (see below), whose sum is σ = 1296388800. Its totient is φ = 172846080.

The previous prime is 501742093. The next prime is 501742121. The reversal of 501742120 is 21247105.

It is a happy number.

It is a super-3 number, since 3×501742120³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 501742091 and 501742100.

It is not an unprimeable number, because it can be changed into a prime (501742121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21649 + ... + 38368.

It is an arithmetic number, because the mean of its divisors is an integer number (20256075).

Almost surely, 2^501742120 is an apocalyptic number.

It is an amenable number.

501742120 is an abundant number, since it is smaller than the sum of its proper divisors (794646680).

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

501742120 is a wasteful number, since it uses less digits than its factorization.

501742120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60058 (or 60054 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 501742120 is about 22399.6008893016. The cubic root of 501742120 is about 794.6212718177.

Adding to 501742120 its reverse (21247105), we get a palindrome (522989225).

The spelling of 501742120 in words is "five hundred one million, seven hundred forty-two thousand, one hundred twenty".