1272164 has 18 divisors (see below), whose sum is σ = 2352294. Its totient is φ = 601920.

The previous prime is 1272163. The next prime is 1272169. The reversal of 1272164 is 4612721.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 369664 = 950^2 + 608^2 .

It is not an unprimeable number, because it can be changed into a prime (1272163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1004 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (130683).

2^1272164 is an apocalyptic number.

It is an amenable number.

1272164 is a deficient number, since it is larger than the sum of its proper divisors (1080130).

1272164 is a wasteful number, since it uses less digits than its factorization.

1272164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 902 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 1272164 is about 1127.9024780538. The cubic root of 1272164 is about 108.3546866521.

Adding to 1272164 its reverse (4612721), we get a palindrome (5884885).

The spelling of 1272164 in words is "one million, two hundred seventy-two thousand, one hundred sixty-four".