1272299543 has 2 divisors, whose sum is σ = 1272299544. Its totient is φ = 1272299542.

The previous prime is 1272299507. The next prime is 1272299563. The reversal of 1272299543 is 3459922721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1272299543 - 2¹⁰ = 1272298519 is a prime.

It is a super-2 number, since 2×1272299543² = 3237492254236017698, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1272299494 and 1272299503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272299563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636149771 + 636149772.

It is an arithmetic number, because the mean of its divisors is an integer number (636149772).

Almost surely, 2^1272299543 is an apocalyptic number.

1272299543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272299543 is an equidigital number, since it uses as much as digits as its factorization.

1272299543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 1272299543 is about 35669.3081373889. The cubic root of 1272299543 is about 1083.5853474027.

The spelling of 1272299543 in words is "one billion, two hundred seventy-two million, two hundred ninety-nine thousand, five hundred forty-three".