512125420 has 24 divisors (see below), whose sum is σ = 1078668864. Its totient is φ = 204239616.

The previous prime is 512125403. The next prime is 512125423. The reversal of 512125420 is 24521215.

It is a junction number, because it is equal to n+sod(n) for n = 512125391 and 512125400.

It is not an unprimeable number, because it can be changed into a prime (512125423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31252 + ... + 44731.

It is an arithmetic number, because the mean of its divisors is an integer number (44944536).

Almost surely, 2^512125420 is an apocalyptic number.

It is an amenable number.

512125420 is an abundant number, since it is smaller than the sum of its proper divisors (566543444).

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

512125420 is a wasteful number, since it uses less digits than its factorization.

512125420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76329 (or 76327 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 512125420 is about 22630.1882449086. The cubic root of 512125420 is about 800.0653175835.

Adding to 512125420 its reverse (24521215), we get a palindrome (536646635).

The spelling of 512125420 in words is "five hundred twelve million, one hundred twenty-five thousand, four hundred twenty".