1243036057 has 2 divisors, whose sum is σ = 1243036058. Its totient is φ = 1243036056.

The previous prime is 1243036051. The next prime is 1243036061. The reversal of 1243036057 is 7506303421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232641881 + 10394176 = 35109^2 + 3224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243036057 - 2⁷ = 1243035929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243036051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621518028 + 621518029.

It is an arithmetic number, because the mean of its divisors is an integer number (621518029).

Almost surely, 2^1243036057 is an apocalyptic number.

It is an amenable number.

1243036057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243036057 is an equidigital number, since it uses as much as digits as its factorization.

1243036057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 1243036057 is about 35256.7164806934. The cubic root of 1243036057 is about 1075.2131704896.

Adding to 1243036057 its reverse (7506303421), we get a palindrome (8749339478).

The spelling of 1243036057 in words is "one billion, two hundred forty-three million, thirty-six thousand, fifty-seven".