1392139 has 6 divisors (see below), whose sum is σ = 1619484. Its totient is φ = 1193220.

The previous prime is 1392133. The next prime is 1392143. The reversal of 1392139 is 9312931.

It is not a de Polignac number, because 1392139 - 2⁹ = 1391627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1392133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14157 + ... + 14254.

It is an arithmetic number, because the mean of its divisors is an integer number (269914).

2^1392139 is an apocalyptic number.

1392139 is a deficient number, since it is larger than the sum of its proper divisors (227345).

1392139 is an equidigital number, since it uses as much as digits as its factorization.

1392139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28425 (or 28418 counting only the distinct ones).

The product of its digits is 1458, while the sum is 28.

The square root of 1392139 is about 1179.8894015966. The cubic root of 1392139 is about 111.6591198088.

It can be divided in two parts, 139 and 2139, that added together give a triangular number (2278 = T₆₇).

The spelling of 1392139 in words is "one million, three hundred ninety-two thousand, one hundred thirty-nine".