1392940 has 24 divisors (see below), whose sum is σ = 2947392. Its totient is φ = 552960.

The previous prime is 1392901. The next prime is 1392943. The reversal of 1392940 is 492931.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1392899 and 1392908.

It is not an unprimeable number, because it can be changed into a prime (1392943) 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, 5005 + ... + 5275.

It is an arithmetic number, because the mean of its divisors is an integer number (122808).

2^1392940 is an apocalyptic number.

1392940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392940 is an abundant number, since it is smaller than the sum of its proper divisors (1554452).

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

1392940 is a wasteful number, since it uses less digits than its factorization.

1392940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1392940 is about 1180.2287913790. The cubic root of 1392940 is about 111.6805309387.

Subtracting from 1392940 its reverse (492931), we obtain a palindrome (900009).

It can be divided in two parts, 1392 and 940, that added together give a palindrome (2332).

The spelling of 1392940 in words is "one million, three hundred ninety-two thousand, nine hundred forty".