1272918233 has 8 divisors (see below), whose sum is σ = 1328902848. Its totient is φ = 1216987024.

The previous prime is 1272918221. The next prime is 1272918307. The reversal of 1272918233 is 3328192721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272918233 - 2⁶ = 1272918169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272918133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39935 + ... + 64347.

It is an arithmetic number, because the mean of its divisors is an integer number (166112856).

Almost surely, 2^1272918233 is an apocalyptic number.

It is an amenable number.

1272918233 is a deficient number, since it is larger than the sum of its proper divisors (55984615).

1272918233 is a wasteful number, since it uses less digits than its factorization.

1272918233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26703.

The product of its digits is 36288, while the sum is 38.

The square root of 1272918233 is about 35677.9796653342. The cubic root of 1272918233 is about 1083.7609598163.

The spelling of 1272918233 in words is "one billion, two hundred seventy-two million, nine hundred eighteen thousand, two hundred thirty-three".