679540142 has 16 divisors (see below), whose sum is σ = 1028590080. Its totient is φ = 336686328.

The previous prime is 679540123. The next prime is 679540157. The reversal of 679540142 is 241045976.

It is a junction number, because it is equal to n+sod(n) for n = 679540096 and 679540105.

It is a congruent number.

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, 166733 + ... + 170759.

It is an arithmetic number, because the mean of its divisors is an integer number (64286880).

Almost surely, 2^679540142 is an apocalyptic number.

679540142 is a deficient number, since it is larger than the sum of its proper divisors (349049938).

679540142 is a wasteful number, since it uses less digits than its factorization.

679540142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 679540142 is about 26067.9907549470. The cubic root of 679540142 is about 879.1676625441.

The spelling of 679540142 in words is "six hundred seventy-nine million, five hundred forty thousand, one hundred forty-two".