1271199 has 8 divisors (see below), whose sum is σ = 1700352. Its totient is φ = 844760.

The previous prime is 1271197. The next prime is 1271201. The reversal of 1271199 is 9911721.

It is an interprime number because it is at equal distance from previous prime (1271197) and next prime (1271201).

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 1271199 - 2¹ = 1271197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042 + ... + 1904.

It is an arithmetic number, because the mean of its divisors is an integer number (212544).

2^1271199 is an apocalyptic number.

1271199 is a deficient number, since it is larger than the sum of its proper divisors (429153).

1271199 is an equidigital number, since it uses as much as digits as its factorization.

1271199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357.

The product of its digits is 1134, while the sum is 30.

The square root of 1271199 is about 1127.4746116876. The cubic root of 1271199 is about 108.3272822393.

It can be divided in two parts, 127 and 1199, that added together give a triangular number (1326 = T₅₁).

The spelling of 1271199 in words is "one million, two hundred seventy-one thousand, one hundred ninety-nine".