512704121 has 4 divisors (see below), whose sum is σ = 513072000. Its totient is φ = 512336244.

The previous prime is 512704111. The next prime is 512704147. The reversal of 512704121 is 121407215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121407215 = 5 ⋅24281443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512704121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512704111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181841 + ... + 184638.

It is an arithmetic number, because the mean of its divisors is an integer number (128268000).

Almost surely, 2^512704121 is an apocalyptic number.

It is an amenable number.

512704121 is a deficient number, since it is larger than the sum of its proper divisors (367879).

512704121 is a wasteful number, since it uses less digits than its factorization.

512704121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367878.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 512704121 is about 22642.9706752449. The cubic root of 512704121 is about 800.3665617025.

The spelling of 512704121 in words is "five hundred twelve million, seven hundred four thousand, one hundred twenty-one".