1272845234 has 8 divisors (see below), whose sum is σ = 1910556288. Its totient is φ = 635993140.

The previous prime is 1272845227. The next prime is 1272845237. The reversal of 1272845234 is 4325482721.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1272845237) 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, 211022 + ... + 216969.

It is an arithmetic number, because the mean of its divisors is an integer number (238819536).

Almost surely, 2^1272845234 is an apocalyptic number.

1272845234 is a deficient number, since it is larger than the sum of its proper divisors (637711054).

1272845234 is a wasteful number, since it uses less digits than its factorization.

1272845234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429480.

The product of its digits is 107520, while the sum is 38.

The square root of 1272845234 is about 35676.9566246898. The cubic root of 1272845234 is about 1083.7402423351.

The spelling of 1272845234 in words is "one billion, two hundred seventy-two million, eight hundred forty-five thousand, two hundred thirty-four".