1392001 has 4 divisors (see below), whose sum is σ = 1499092. Its totient is φ = 1284912.

The previous prime is 1391989. The next prime is 1392007. The reversal of 1392001 is 1002931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 291600 + 1100401 = 540^2 + 1049^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392001 - 2⁵ = 1391969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53526 + ... + 53551.

It is an arithmetic number, because the mean of its divisors is an integer number (374773).

2^1392001 is an apocalyptic number.

It is an amenable number.

1392001 is a deficient number, since it is larger than the sum of its proper divisors (107091).

1392001 is a wasteful number, since it uses less digits than its factorization.

1392001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107090.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1392001 is about 1179.8309200898. The cubic root of 1392001 is about 111.6554301706.

Adding to 1392001 its reverse (1002931), we get a palindrome (2394932).

The spelling of 1392001 in words is "one million, three hundred ninety-two thousand, one".