1272514889 has 8 divisors (see below), whose sum is σ = 1354816008. Its totient is φ = 1191041280.

The previous prime is 1272514799. The next prime is 1272514913. The reversal of 1272514889 is 9884152721.

It can be written as a sum of positive squares in 4 ways, for example, as 60918025 + 1211596864 = 7805^2 + 34808^2 .

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 1272514889 - 2¹² = 1272510793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1272514589) 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, 203702 + ... + 209855.

It is an arithmetic number, because the mean of its divisors is an integer number (169352001).

Almost surely, 2^1272514889 is an apocalyptic number.

It is an amenable number.

1272514889 is a deficient number, since it is larger than the sum of its proper divisors (82301119).

1272514889 is a wasteful number, since it uses less digits than its factorization.

1272514889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413755.

The product of its digits is 322560, while the sum is 47.

The square root of 1272514889 is about 35672.3266552660. The cubic root of 1272514889 is about 1083.6464788681.

The spelling of 1272514889 in words is "one billion, two hundred seventy-two million, five hundred fourteen thousand, eight hundred eighty-nine".