1272914749 has 8 divisors (see below), whose sum is σ = 1284539840. Its totient is φ = 1261332000.

The previous prime is 1272914723. The next prime is 1272914779. The reversal of 1272914749 is 9474192721.

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 a de Polignac number, because none of the positive numbers 2^k-1272914749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1272914699 and 1272914708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272914779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51454 + ... + 72064.

It is an arithmetic number, because the mean of its divisors is an integer number (160567480).

Almost surely, 2^1272914749 is an apocalyptic number.

It is an amenable number.

1272914749 is a deficient number, since it is larger than the sum of its proper divisors (11625091).

1272914749 is a wasteful number, since it uses less digits than its factorization.

1272914749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21171.

The product of its digits is 254016, while the sum is 46.

The square root of 1272914749 is about 35677.9308396661. The cubic root of 1272914749 is about 1083.7599710577.

The spelling of 1272914749 in words is "one billion, two hundred seventy-two million, nine hundred fourteen thousand, seven hundred forty-nine".