1979356042 has 8 divisors (see below), whose sum is σ = 2969330976. Its totient is φ = 989579052.

The previous prime is 1979356039. The next prime is 1979356061. The reversal of 1979356042 is 2406539791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1979355983 and 1979356001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21268 + ... + 66415.

It is an arithmetic number, because the mean of its divisors is an integer number (371166372).

Almost surely, 2^1979356042 is an apocalyptic number.

1979356042 is a deficient number, since it is larger than the sum of its proper divisors (989974934).

1979356042 is a wasteful number, since it uses less digits than its factorization.

1979356042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98972.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 1979356042 is about 44489.9543942225. The cubic root of 1979356042 is about 1255.5710891121.

The spelling of 1979356042 in words is "one billion, nine hundred seventy-nine million, three hundred fifty-six thousand, forty-two".