1392045 has 32 divisors (see below), whose sum is σ = 2426112. Its totient is φ = 678912.

The previous prime is 1392007. The next prime is 1392089. The reversal of 1392045 is 5402931.

It is not a de Polignac number, because 1392045 - 2⁶ = 1391981 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 13464 + ... + 13566.

It is an arithmetic number, because the mean of its divisors is an integer number (75816).

2^1392045 is an apocalyptic number.

1392045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1392045 is a deficient number, since it is larger than the sum of its proper divisors (1034067).

1392045 is a wasteful number, since it uses less digits than its factorization.

1392045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1392045 is about 1179.8495666821. The cubic root of 1392045 is about 111.6566066034.

Adding to 1392045 its reverse (5402931), we get a palindrome (6794976).

The spelling of 1392045 in words is "one million, three hundred ninety-two thousand, forty-five".