1272097 has 4 divisors (see below), whose sum is σ = 1306516. Its totient is φ = 1237680.

The previous prime is 1272091. The next prime is 1272109. The reversal of 1272097 is 7902721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7902721 = 47 ⋅168143.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 646416 = 791^2 + 804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272097 is a prime.

It is a Duffinian number.

1272097 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1272091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17154 + ... + 17227.

It is an arithmetic number, because the mean of its divisors is an integer number (326629).

2^1272097 is an apocalyptic number.

It is an amenable number.

1272097 is a deficient number, since it is larger than the sum of its proper divisors (34419).

1272097 is an equidigital number, since it uses as much as digits as its factorization.

1272097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34418.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1272097 is about 1127.8727765134. The cubic root of 1272097 is about 108.3527844101.

The spelling of 1272097 in words is "one million, two hundred seventy-two thousand, ninety-seven".