1272117 has 16 divisors (see below), whose sum is σ = 2115072. Its totient is φ = 660720.

The previous prime is 1272113. The next prime is 1272133. The reversal of 1272117 is 7112721.

It is a happy number.

It is not a de Polignac number, because 1272117 - 2² = 1272113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1272093 and 1272102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2523 + ... + 2984.

It is an arithmetic number, because the mean of its divisors is an integer number (132192).

2^1272117 is an apocalyptic number.

It is an amenable number.

1272117 is a deficient number, since it is larger than the sum of its proper divisors (842955).

1272117 is a wasteful number, since it uses less digits than its factorization.

1272117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528.

The product of its digits is 196, while the sum is 21.

The square root of 1272117 is about 1127.8816427268. The cubic root of 1272117 is about 108.3533522505.

Adding to 1272117 its reverse (7112721), we get a palindrome (8384838).

The spelling of 1272117 in words is "one million, two hundred seventy-two thousand, one hundred seventeen".