512130421 has 8 divisors (see below), whose sum is σ = 563088384. Its totient is φ = 461905920.

The previous prime is 512130407. The next prime is 512130439. The reversal of 512130421 is 124031215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 512130421 - 2⁷ = 512130293 is a prime.

It is a super-2 number, since 2×512130421² = 524555136227274482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512130461) 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, 181900 + ... + 184693.

It is an arithmetic number, because the mean of its divisors is an integer number (70386048).

Almost surely, 2^512130421 is an apocalyptic number.

It is an amenable number.

512130421 is a deficient number, since it is larger than the sum of its proper divisors (50957963).

512130421 is a wasteful number, since it uses less digits than its factorization.

512130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366731.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 512130421 is about 22630.2987386380. The cubic root of 512130421 is about 800.0679218373.

Adding to 512130421 its reverse (124031215), we get a palindrome (636161636).

The spelling of 512130421 in words is "five hundred twelve million, one hundred thirty thousand, four hundred twenty-one".