1272233158 has 24 divisors (see below), whose sum is σ = 2228804424. Its totient is φ = 543060000.

The previous prime is 1272233111. The next prime is 1272233159. The reversal of 1272233158 is 8513322721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272233159) 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 11 ways as a sum of consecutive naturals, for example, 1263 + ... + 50458.

It is an arithmetic number, because the mean of its divisors is an integer number (92866851).

Almost surely, 2^1272233158 is an apocalyptic number.

1272233158 is a deficient number, since it is larger than the sum of its proper divisors (956571266).

1272233158 is a wasteful number, since it uses less digits than its factorization.

1272233158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51988 (or 51981 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 1272233158 is about 35668.3775633263. The cubic root of 1272233158 is about 1083.5665009330.

Adding to 1272233158 its reverse (8513322721), we get a palindrome (9785555879).

The spelling of 1272233158 in words is "one billion, two hundred seventy-two million, two hundred thirty-three thousand, one hundred fifty-eight".