1245744 has 60 divisors (see below), whose sum is σ = 3588312. Its totient is φ = 403200.

The previous prime is 1245721. The next prime is 1245763. The reversal of 1245744 is 4475421.

It is a super-2 number, since 2×1245744² = 3103756227072, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5799 + ... + 6009.

2^1245744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1794156).

1245744 is an abundant number, since it is smaller than the sum of its proper divisors (2342568).

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

1245744 is a wasteful number, since it uses less digits than its factorization.

1245744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 257 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 1245744 is about 1116.1290247996. The cubic root of 1245744 is about 107.5993384978.

The spelling of 1245744 in words is "one million, two hundred forty-five thousand, seven hundred forty-four".