1397140 has 12 divisors (see below), whose sum is σ = 2934036. Its totient is φ = 558848.

The previous prime is 1397131. The next prime is 1397153. The reversal of 1397140 is 417931.

It can be written as a sum of positive squares in 2 ways, for example, as 498436 + 898704 = 706^2 + 948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34909 + ... + 34948.

It is an arithmetic number, because the mean of its divisors is an integer number (244503).

2^1397140 is an apocalyptic number.

1397140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1397140 is an abundant number, since it is smaller than the sum of its proper divisors (1536896).

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

1397140 is a wasteful number, since it uses less digits than its factorization.

1397140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69866 (or 69864 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1397140 is about 1182.0067681701. The cubic root of 1397140 is about 111.7926648861.

The spelling of 1397140 in words is "one million, three hundred ninety-seven thousand, one hundred forty".