1392656642 has 16 divisors (see below), whose sum is σ = 2368080960. Its totient is φ = 608934672.

The previous prime is 1392656627. The next prime is 1392656651. The reversal of 1392656642 is 2466562931.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1392656593 and 1392656602.

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, 1409078 + ... + 1410065.

It is an arithmetic number, because the mean of its divisors is an integer number (148005060).

Almost surely, 2^1392656642 is an apocalyptic number.

1392656642 is a deficient number, since it is larger than the sum of its proper divisors (975424318).

1392656642 is a wasteful number, since it uses less digits than its factorization.

1392656642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819177.

The product of its digits is 466560, while the sum is 44.

The square root of 1392656642 is about 37318.3151013011. The cubic root of 1392656642 is about 1116.7295757633.

The spelling of 1392656642 in words is "one billion, three hundred ninety-two million, six hundred fifty-six thousand, six hundred forty-two".