679393042 has 16 divisors (see below), whose sum is σ = 1058255352. Its totient is φ = 326868480.

The previous prime is 679393027. The next prime is 679393073. The reversal of 679393042 is 240393976.

It can be written as a sum of positive squares in 4 ways, for example, as 226171521 + 453221521 = 15039^2 + 21289^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 679393042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50763 + ... + 62734.

Almost surely, 2^679393042 is an apocalyptic number.

679393042 is a deficient number, since it is larger than the sum of its proper divisors (378862310).

679393042 is a wasteful number, since it uses less digits than its factorization.

679393042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113613.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 679393042 is about 26065.1691343064. The cubic root of 679393042 is about 879.1042201817.

The spelling of 679393042 in words is "six hundred seventy-nine million, three hundred ninety-three thousand, forty-two".