512142220 has 24 divisors (see below), whose sum is σ = 1078509600. Its totient is φ = 204283392.

The previous prime is 512142203. The next prime is 512142259. The reversal of 512142220 is 22241215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28485 + ... + 42844.

It is an arithmetic number, because the mean of its divisors is an integer number (44937900).

Almost surely, 2^512142220 is an apocalyptic number.

It is an amenable number.

512142220 is an abundant number, since it is smaller than the sum of its proper divisors (566367380).

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

512142220 is a wasteful number, since it uses less digits than its factorization.

512142220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71697 (or 71695 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 512142220 is about 22630.5594274644. The cubic root of 512142220 is about 800.0740660592.

Adding to 512142220 its reverse (22241215), we get a palindrome (534383435).

The spelling of 512142220 in words is "five hundred twelve million, one hundred forty-two thousand, two hundred twenty".