1279161 has 27 divisors (see below), whose sum is σ = 2072109. Its totient is φ = 760032.

The previous prime is 1279141. The next prime is 1279163. The reversal of 1279161 is 1619721.

The square root of 1279161 is 1131.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 164025 + 1115136 = 405^2 + 1056^2 .

It is not a de Polignac number, because 1279161 - 2¹¹ = 1277113 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1279163) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44095 + ... + 44123.

2^1279161 is an apocalyptic number.

1279161 is the 1131-st square number.

1279161 is the 566-th centered octagonal number.

It is an amenable number.

1279161 is a deficient number, since it is larger than the sum of its proper divisors (792948).

1279161 is a wasteful number, since it uses less digits than its factorization.

1279161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 45 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The cubic root of 1279161 is about 108.5529765997.

The spelling of 1279161 in words is "one million, two hundred seventy-nine thousand, one hundred sixty-one".