1273201279 has 16 divisors (see below), whose sum is σ = 1505986560. Its totient is φ = 1053326880.

The previous prime is 1273201273. The next prime is 1273201291. The reversal of 1273201279 is 9721023721.

It is a cyclic number.

It is not a de Polignac number, because 1273201279 - 2⁹ = 1273200767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273201273) 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, 76872 + ... + 91954.

It is an arithmetic number, because the mean of its divisors is an integer number (94124160).

Almost surely, 2^1273201279 is an apocalyptic number.

1273201279 is a deficient number, since it is larger than the sum of its proper divisors (232785281).

1273201279 is a wasteful number, since it uses less digits than its factorization.

1273201279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15510.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 1273201279 is about 35681.9461212530. The cubic root of 1273201279 is about 1083.8412821975.

The spelling of 1273201279 in words is "one billion, two hundred seventy-three million, two hundred one thousand, two hundred seventy-nine".