1244857 has 2 divisors, whose sum is σ = 1244858. Its totient is φ = 1244856.

The previous prime is 1244839. The next prime is 1244863. The reversal of 1244857 is 7584421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767376 + 477481 = 876^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244857 - 2⁷ = 1244729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622428 + 622429.

It is an arithmetic number, because the mean of its divisors is an integer number (622429).

2^1244857 is an apocalyptic number.

It is an amenable number.

1244857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244857 is an equidigital number, since it uses as much as digits as its factorization.

1244857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 31.

The square root of 1244857 is about 1115.7315985487. The cubic root of 1244857 is about 107.5737946530.

The spelling of 1244857 in words is "one million, two hundred forty-four thousand, eight hundred fifty-seven".