500121040 has 40 divisors (see below), whose sum is σ = 1223984160. Its totient is φ = 189518976.

The previous prime is 500121023. The next prime is 500121043. The reversal of 500121040 is 40121005.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×500121040³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 500121040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500121043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162994 + ... + 166033.

It is an arithmetic number, because the mean of its divisors is an integer number (30599604).

Almost surely, 2^500121040 is an apocalyptic number.

It is an amenable number.

500121040 is an abundant number, since it is smaller than the sum of its proper divisors (723863120).

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

500121040 is a wasteful number, since it uses less digits than its factorization.

500121040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329059 (or 329053 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 500121040 is about 22363.3861478981. The cubic root of 500121040 is about 793.7645671578.

Adding to 500121040 its reverse (40121005), we get a palindrome (540242045).

The spelling of 500121040 in words is "five hundred million, one hundred twenty-one thousand, forty".