1272548379 has 16 divisors (see below), whose sum is σ = 1799804448. Its totient is φ = 797010432.

The previous prime is 1272548371. The next prime is 1272548399. The reversal of 1272548379 is 9738452721.

It is a happy number.

1272548379 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1272548379 - 2³ = 1272548371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272548371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6009 + ... + 50805.

It is an arithmetic number, because the mean of its divisors is an integer number (112487778).

Almost surely, 2^1272548379 is an apocalyptic number.

1272548379 is a deficient number, since it is larger than the sum of its proper divisors (527256069).

1272548379 is a wasteful number, since it uses less digits than its factorization.

1272548379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45374.

The product of its digits is 846720, while the sum is 48.

The square root of 1272548379 is about 35672.7960636673. The cubic root of 1272548379 is about 1083.6559852407.

The spelling of 1272548379 in words is "one billion, two hundred seventy-two million, five hundred forty-eight thousand, three hundred seventy-nine".