1272252131 has 2 divisors, whose sum is σ = 1272252132. Its totient is φ = 1272252130.

The previous prime is 1272252101. The next prime is 1272252151. The reversal of 1272252131 is 1312522721.

It is a strong prime.

It is an emirp because it is prime and its reverse (1312522721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1272252131 - 2¹⁰ = 1272251107 is a prime.

It is a super-2 number, since 2×1272252131² = 3237250969668082322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1272252131.

It is not a weakly prime, because it can be changed into another prime (1272252101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636126065 + 636126066.

It is an arithmetic number, because the mean of its divisors is an integer number (636126066).

Almost surely, 2^1272252131 is an apocalyptic number.

1272252131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272252131 is an equidigital number, since it uses as much as digits as its factorization.

1272252131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 1272252131 is about 35668.6435262122. The cubic root of 1272252131 is about 1083.5718873684.

Adding to 1272252131 its reverse (1312522721), we get a palindrome (2584774852).

The spelling of 1272252131 in words is "one billion, two hundred seventy-two million, two hundred fifty-two thousand, one hundred thirty-one".