516430123 has 4 divisors (see below), whose sum is σ = 563378328. Its totient is φ = 469481920.

The previous prime is 516430121. The next prime is 516430139. The reversal of 516430123 is 321034615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 516430123 - 2¹ = 516430121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516430121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23474086 + ... + 23474107.

It is an arithmetic number, because the mean of its divisors is an integer number (140844582).

Almost surely, 2^516430123 is an apocalyptic number.

516430123 is a deficient number, since it is larger than the sum of its proper divisors (46948205).

516430123 is a wasteful number, since it uses less digits than its factorization.

516430123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46948204.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 516430123 is about 22725.0989656811. The cubic root of 516430123 is about 802.3007326726.

Adding to 516430123 its reverse (321034615), we get a palindrome (837464738).

The spelling of 516430123 in words is "five hundred sixteen million, four hundred thirty thousand, one hundred twenty-three".