1272255243 has 16 divisors (see below), whose sum is σ = 1941096960. Its totient is φ = 726094656.

The previous prime is 1272255241. The next prime is 1272255247. The reversal of 1272255243 is 3425522721.

It is not a de Polignac number, because 1272255243 - 2¹ = 1272255241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272255241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20455 + ... + 54432.

It is an arithmetic number, because the mean of its divisors is an integer number (121318560).

Almost surely, 2^1272255243 is an apocalyptic number.

1272255243 is a deficient number, since it is larger than the sum of its proper divisors (668841717).

1272255243 is an equidigital number, since it uses as much as digits as its factorization.

1272255243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75706.

The product of its digits is 33600, while the sum is 33.

The square root of 1272255243 is about 35668.6871499359. The cubic root of 1272255243 is about 1083.5727708601.

Adding to 1272255243 its reverse (3425522721), we get a palindrome (4697777964).

The spelling of 1272255243 in words is "one billion, two hundred seventy-two million, two hundred fifty-five thousand, two hundred forty-three".