1272197 has 4 divisors (see below), whose sum is σ = 1277760. Its totient is φ = 1266636.

The previous prime is 1272191. The next prime is 1272203. The reversal of 1272197 is 7912721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7912721 = 19 ⋅416459.

It is an interprime number because it is at equal distance from previous prime (1272191) and next prime (1272203).

It is a cyclic number.

It is not a de Polignac number, because 1272197 - 2⁶ = 1272133 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 (1272191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2423 + ... + 2900.

It is an arithmetic number, because the mean of its divisors is an integer number (319440).

2^1272197 is an apocalyptic number.

It is an amenable number.

1272197 is a deficient number, since it is larger than the sum of its proper divisors (5563).

1272197 is an equidigital number, since it uses as much as digits as its factorization.

1272197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562.

The product of its digits is 1764, while the sum is 29.

The square root of 1272197 is about 1127.9171068833. The cubic root of 1272197 is about 108.3556235527.

The spelling of 1272197 in words is "one million, two hundred seventy-two thousand, one hundred ninety-seven".