516207442 has 4 divisors (see below), whose sum is σ = 774311166. Its totient is φ = 258103720.

The previous prime is 516207421. The next prime is 516207467. The reversal of 516207442 is 244702615.

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

It can be written as a sum of positive squares in only one way, i.e., 453306681 + 62900761 = 21291^2 + 7931^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129051859 + ... + 129051862.

Almost surely, 2^516207442 is an apocalyptic number.

516207442 is a deficient number, since it is larger than the sum of its proper divisors (258103724).

516207442 is a wasteful number, since it uses less digits than its factorization.

516207442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258103723.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 516207442 is about 22720.1989868047. The cubic root of 516207442 is about 802.1854006356.

The spelling of 516207442 in words is "five hundred sixteen million, two hundred seven thousand, four hundred forty-two".