1392140 has 24 divisors (see below), whose sum is σ = 2987712. Its totient is φ = 544640.

The previous prime is 1392133. The next prime is 1392143. The reversal of 1392140 is 412931.

1392140 = T₆₄ + T₆₅ + ... + T₂₀₄.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1392143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200 + ... + 1680.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

2^1392140 is an apocalyptic number.

1392140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392140 is an abundant number, since it is smaller than the sum of its proper divisors (1595572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1392140 is a wasteful number, since it uses less digits than its factorization.

1392140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1392140 is about 1179.8898253651. The cubic root of 1392140 is about 111.6591465444.

The spelling of 1392140 in words is "one million, three hundred ninety-two thousand, one hundred forty".