1392540 has 24 divisors (see below), whose sum is σ = 3899280. Its totient is φ = 371328.

The previous prime is 1392539. The next prime is 1392541. The reversal of 1392540 is 452931.

It is an interprime number because it is at equal distance from previous prime (1392539) and next prime (1392541).

It is a self number, because there is not a number n which added to its sum of digits gives 1392540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11545 + ... + 11664.

It is an arithmetic number, because the mean of its divisors is an integer number (162470).

2^1392540 is an apocalyptic number.

1392540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392540 is an abundant number, since it is smaller than the sum of its proper divisors (2506740).

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

1392540 is a wasteful number, since it uses less digits than its factorization.

1392540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23221 (or 23219 counting only the distinct ones).

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

The square root of 1392540 is about 1180.0593205428. The cubic root of 1392540 is about 111.6698397653.

The spelling of 1392540 in words is "one million, three hundred ninety-two thousand, five hundred forty".