1244128057 has 2 divisors, whose sum is σ = 1244128058. Its totient is φ = 1244128056.

The previous prime is 1244128031. The next prime is 1244128129. The reversal of 1244128057 is 7508214421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199652496 + 44475561 = 34636^2 + 6669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244128057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244128007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622064028 + 622064029.

It is an arithmetic number, because the mean of its divisors is an integer number (622064029).

Almost surely, 2^1244128057 is an apocalyptic number.

It is an amenable number.

1244128057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244128057 is an equidigital number, since it uses as much as digits as its factorization.

1244128057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 1244128057 is about 35272.1994919512. The cubic root of 1244128057 is about 1075.5279345224.

The spelling of 1244128057 in words is "one billion, two hundred forty-four million, one hundred twenty-eight thousand, fifty-seven".