1391395942 has 8 divisors (see below), whose sum is σ = 2087441496. Its totient is φ = 695582112.

The previous prime is 1391395939. The next prime is 1391395963. The reversal of 1391395942 is 2495931931.

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 = 1391395892 and 1391395901.

It is a congruent number.

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, 42048 + ... + 67459.

It is an arithmetic number, because the mean of its divisors is an integer number (260930187).

Almost surely, 2^1391395942 is an apocalyptic number.

1391395942 is a deficient number, since it is larger than the sum of its proper divisors (696045554).

1391395942 is a wasteful number, since it uses less digits than its factorization.

1391395942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115862.

The product of its digits is 262440, while the sum is 46.

The square root of 1391395942 is about 37301.4201070147. The cubic root of 1391395942 is about 1116.3925015296.

The spelling of 1391395942 in words is "one billion, three hundred ninety-one million, three hundred ninety-five thousand, nine hundred forty-two".