1392345 has 12 divisors (see below), whose sum is σ = 2413476. Its totient is φ = 742560.

The previous prime is 1392323. The next prime is 1392353. The reversal of 1392345 is 5432931.

It can be written as a sum of positive squares in 2 ways, for example, as 447561 + 944784 = 669^2 + 972^2 .

It is not a de Polignac number, because 1392345 - 2⁸ = 1392089 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15426 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (201123).

2^1392345 is an apocalyptic number.

1392345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1392345 is a deficient number, since it is larger than the sum of its proper divisors (1021131).

1392345 is a wasteful number, since it uses less digits than its factorization.

1392345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30952 (or 30949 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 1392345 is about 1179.9766946851. The cubic root of 1392345 is about 111.6646270759.

The spelling of 1392345 in words is "one million, three hundred ninety-two thousand, three hundred forty-five".