1267397 has 8 divisors (see below), whose sum is σ = 1309440. Its totient is φ = 1226160.

The previous prime is 1267381. The next prime is 1267403. The reversal of 1267397 is 7937621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1267397 - 2⁴ = 1267381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267307) 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, 4688 + ... + 4950.

It is an arithmetic number, because the mean of its divisors is an integer number (163680).

2^1267397 is an apocalyptic number.

It is an amenable number.

1267397 is a deficient number, since it is larger than the sum of its proper divisors (42043).

1267397 is an equidigital number, since it uses as much as digits as its factorization.

1267397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403.

The product of its digits is 15876, while the sum is 35.

The square root of 1267397 is about 1125.7872800845. The cubic root of 1267397 is about 108.2191765274.

Subtracting from 1267397 its product of digits (15876), we obtain a palindrome (1251521).

The spelling of 1267397 in words is "one million, two hundred sixty-seven thousand, three hundred ninety-seven".