512140140 has 72 divisors (see below), whose sum is σ = 1578992688. Its totient is φ = 134328960.

The previous prime is 512140133. The next prime is 512140151. The reversal of 512140140 is 41041215.

512140140 is a `hidden beast` number, since 512 + 14 + 0 + 140 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12342 + ... + 34301.

It is an arithmetic number, because the mean of its divisors is an integer number (21930454).

Almost surely, 2^512140140 is an apocalyptic number.

It is an amenable number.

512140140 is an abundant number, since it is smaller than the sum of its proper divisors (1066852548).

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

512140140 is a wasteful number, since it uses less digits than its factorization.

512140140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46719 (or 46714 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 512140140 is about 22630.5134718592. The cubic root of 512140140 is about 800.0729829250.

Adding to 512140140 its reverse (41041215), we get a palindrome (553181355).

The spelling of 512140140 in words is "five hundred twelve million, one hundred forty thousand, one hundred forty".