1272089 has 12 divisors (see below), whose sum is σ = 1594404. Its totient is φ = 1005984.

The previous prime is 1272079. The next prime is 1272091. The reversal of 1272089 is 9802721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 94864 + 1177225 = 308^2 + 1085^2 .

It is not a de Polignac number, because 1272089 - 2⁸ = 1271833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362 + ... + 1635.

It is an arithmetic number, because the mean of its divisors is an integer number (132867).

2^1272089 is an apocalyptic number.

It is an amenable number.

1272089 is a deficient number, since it is larger than the sum of its proper divisors (322315).

1272089 is a wasteful number, since it uses less digits than its factorization.

1272089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024 (or 2017 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1272089 is about 1127.8692300085. The cubic root of 1272089 is about 108.3525572722.

The spelling of 1272089 in words is "one million, two hundred seventy-two thousand, eighty-nine".