1273541151 has 4 divisors (see below), whose sum is σ = 1698054872. Its totient is φ = 849027432.

The previous prime is 1273541149. The next prime is 1273541153. The reversal of 1273541151 is 1511453721.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1273541149) and next prime (1273541153).

It is not a de Polignac number, because 1273541151 - 2¹ = 1273541149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273541153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212256856 + ... + 212256861.

It is an arithmetic number, because the mean of its divisors is an integer number (424513718).

Almost surely, 2^1273541151 is an apocalyptic number.

1273541151 is a deficient number, since it is larger than the sum of its proper divisors (424513721).

1273541151 is an equidigital number, since it uses as much as digits as its factorization.

1273541151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424513720.

The product of its digits is 4200, while the sum is 30.

The square root of 1273541151 is about 35686.7083239685. The cubic root of 1273541151 is about 1083.9377148506.

Adding to 1273541151 its reverse (1511453721), we get a palindrome (2784994872).

The spelling of 1273541151 in words is "one billion, two hundred seventy-three million, five hundred forty-one thousand, one hundred fifty-one".