512142020 has 24 divisors (see below), whose sum is σ = 1158229464. Its totient is φ = 189098496.

The previous prime is 512141963. The next prime is 512142061. The reversal of 512142020 is 20241215.

It can be written as a sum of positive squares in 4 ways, for example, as 10023556 + 502118464 = 3166^2 + 22408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 512142020.

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, 984629 + ... + 985148.

It is an arithmetic number, because the mean of its divisors is an integer number (48259561).

Almost surely, 2^512142020 is an apocalyptic number.

It is an amenable number.

512142020 is an abundant number, since it is smaller than the sum of its proper divisors (646087444).

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

512142020 is a wasteful number, since it uses less digits than its factorization.

512142020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969799 (or 1969797 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 512142020 is about 22630.5550086603. Note that the first 3 decimals coincide. The cubic root of 512142020 is about 800.0739619118.

Adding to 512142020 its reverse (20241215), we get a palindrome (532383235).

The spelling of 512142020 in words is "five hundred twelve million, one hundred forty-two thousand, twenty".