1272998453 has 2 divisors, whose sum is σ = 1272998454. Its totient is φ = 1272998452.

The previous prime is 1272998429. The next prime is 1272998483. The reversal of 1272998453 is 3548992721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154776324 + 118222129 = 33982^2 + 10873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272998453 - 2⁸ = 1272998197 is a prime.

It is a super-2 number, since 2×1272998453² = 3241050122680786418, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272998483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636499226 + 636499227.

It is an arithmetic number, because the mean of its divisors is an integer number (636499227).

Almost surely, 2^1272998453 is an apocalyptic number.

It is an amenable number.

1272998453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272998453 is an equidigital number, since it uses as much as digits as its factorization.

1272998453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 1272998453 is about 35679.1038704730. The cubic root of 1272998453 is about 1083.7837257400.

The spelling of 1272998453 in words is "one billion, two hundred seventy-two million, nine hundred ninety-eight thousand, four hundred fifty-three".