1272166 has 16 divisors (see below), whose sum is σ = 2207520. Its totient is φ = 538560.

The previous prime is 1272163. The next prime is 1272169. The reversal of 1272166 is 6612721.

It is an interprime number because it is at equal distance from previous prime (1272163) and next prime (1272169).

It is a self number, because there is not a number n which added to its sum of digits gives 1272166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272163) 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 7 ways as a sum of consecutive naturals, for example, 736 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (137970).

2^1272166 is an apocalyptic number.

1272166 is a deficient number, since it is larger than the sum of its proper divisors (935354).

1272166 is a wasteful number, since it uses less digits than its factorization.

1272166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119.

The product of its digits is 1008, while the sum is 25.

The square root of 1272166 is about 1127.9033646550. The cubic root of 1272166 is about 108.3547434344.

Adding to 1272166 its reverse (6612721), we get a palindrome (7884887).

The spelling of 1272166 in words is "one million, two hundred seventy-two thousand, one hundred sixty-six".