1245740 has 24 divisors (see below), whose sum is σ = 2637600. Its totient is φ = 494208.

The previous prime is 1245721. The next prime is 1245763. The reversal of 1245740 is 475421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3824 + ... + 4136.

It is an arithmetic number, because the mean of its divisors is an integer number (109900).

2^1245740 is an apocalyptic number.

1245740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245740 is an abundant number, since it is smaller than the sum of its proper divisors (1391860).

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

1245740 is a wasteful number, since it uses less digits than its factorization.

1245740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1245740 is about 1116.1272328906. The cubic root of 1245740 is about 107.5992233329.

The spelling of 1245740 in words is "one million, two hundred forty-five thousand, seven hundred forty".