1042253309 has 2 divisors, whose sum is σ = 1042253310. Its totient is φ = 1042253308.

The previous prime is 1042253299. The next prime is 1042253347. The reversal of 1042253309 is 9033522401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 838392025 + 203861284 = 28955^2 + 14278^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042253309 - 2⁴ = 1042253293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042253369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521126654 + 521126655.

It is an arithmetic number, because the mean of its divisors is an integer number (521126655).

Almost surely, 2^1042253309 is an apocalyptic number.

It is an amenable number.

1042253309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042253309 is an equidigital number, since it uses as much as digits as its factorization.

1042253309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1042253309 is about 32283.9481631352. The cubic root of 1042253309 is about 1013.8905943321.

The spelling of 1042253309 in words is "one billion, forty-two million, two hundred fifty-three thousand, three hundred nine".