1256144 has 10 divisors (see below), whose sum is σ = 2433810. Its totient is φ = 628064.

The previous prime is 1256107. The next prime is 1256149. The reversal of 1256144 is 4416521.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 19600 = 1112^2 + 140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39239 + ... + 39270.

It is an arithmetic number, because the mean of its divisors is an integer number (243381).

2^1256144 is an apocalyptic number.

It is an amenable number.

1256144 is a deficient number, since it is larger than the sum of its proper divisors (1177666).

1256144 is an equidigital number, since it uses as much as digits as its factorization.

1256144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78517 (or 78511 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 1256144 is about 1120.7783010034. The cubic root of 1256144 is about 107.8979374151.

The spelling of 1256144 in words is "one million, two hundred fifty-six thousand, one hundred forty-four".