501212040 has 128 divisors (see below), whose sum is σ = 1723023360. Its totient is φ = 114257664.

The previous prime is 501212029. The next prime is 501212057. The reversal of 501212040 is 40212105.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509389 + ... + 510371.

It is an arithmetic number, because the mean of its divisors is an integer number (13461120).

Almost surely, 2^501212040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501212040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861511680).

501212040 is an abundant number, since it is smaller than the sum of its proper divisors (1221811320).

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

501212040 is a wasteful number, since it uses less digits than its factorization.

501212040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 1607 counting only the distinct ones).

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

The square root of 501212040 is about 22387.7654088120. The cubic root of 501212040 is about 794.3413396585.

Adding to 501212040 its reverse (40212105), we get a palindrome (541424145).

The spelling of 501212040 in words is "five hundred one million, two hundred twelve thousand, forty".