512500140 has 72 divisors (see below), whose sum is σ = 1558506768. Its totient is φ = 136321920.

The previous prime is 512500133. The next prime is 512500193. The reversal of 512500140 is 41005215.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 72399 + ... + 79161.

Almost surely, 2^512500140 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 512500140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779253384).

512500140 is an abundant number, since it is smaller than the sum of its proper divisors (1046006628).

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

512500140 is a wasteful number, since it uses less digits than its factorization.

512500140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199 (or 7194 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 512500140 is about 22638.4659374261. The cubic root of 512500140 is about 800.2604048108.

Adding to 512500140 its reverse (41005215), we get a palindrome (553505355).

The spelling of 512500140 in words is "five hundred twelve million, five hundred thousand, one hundred forty".