1272146 has 4 divisors (see below), whose sum is σ = 1908222. Its totient is φ = 636072.

The previous prime is 1272133. The next prime is 1272151. The reversal of 1272146 is 6412721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6412721 = 7 ⋅916103.

It can be written as a sum of positive squares in only one way, i.e., 829921 + 442225 = 911^2 + 665^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318035 + ... + 318038.

2^1272146 is an apocalyptic number.

1272146 is a deficient number, since it is larger than the sum of its proper divisors (636076).

1272146 is an equidigital number, since it uses as much as digits as its factorization.

1272146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636075.

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

The square root of 1272146 is about 1127.8944986123. The cubic root of 1272146 is about 108.3541756086.

Adding to 1272146 its reverse (6412721), we get a palindrome (7684867).

The spelling of 1272146 in words is "one million, two hundred seventy-two thousand, one hundred forty-six".