512423421 has 8 divisors (see below), whose sum is σ = 684903360. Its totient is φ = 340779552.

The previous prime is 512423419. The next prime is 512423447. The reversal of 512423421 is 124324215.

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

It is not a de Polignac number, because 512423421 - 2¹ = 512423419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 512423391 and 512423400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512423621) 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, 207585 + ... + 210038.

It is an arithmetic number, because the mean of its divisors is an integer number (85612920).

Almost surely, 2^512423421 is an apocalyptic number.

It is an amenable number.

512423421 is a deficient number, since it is larger than the sum of its proper divisors (172479939).

512423421 is a wasteful number, since it uses less digits than its factorization.

512423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418035.

The product of its digits is 1920, while the sum is 24.

The square root of 512423421 is about 22636.7714349905. The cubic root of 512423421 is about 800.2204710059.

Adding to 512423421 its reverse (124324215), we get a palindrome (636747636).

The spelling of 512423421 in words is "five hundred twelve million, four hundred twenty-three thousand, four hundred twenty-one".