1245456 has 75 divisors (see below), whose sum is σ = 3724743. Its totient is φ = 401760.

The previous prime is 1245451. The next prime is 1245479. The reversal of 1245456 is 6545421.

The square root of 1245456 is 1116.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1245451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 40161 + ... + 40191.

2^1245456 is an apocalyptic number.

1245456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1245456 is the 1116-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245456

1245456 is an abundant number, since it is smaller than the sum of its proper divisors (2479287).

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

1245456 is an equidigital number, since it uses as much as digits as its factorization.

1245456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 36 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The cubic root of 1245456 is about 107.5910459974.

The spelling of 1245456 in words is "one million, two hundred forty-five thousand, four hundred fifty-six".