1271947 has 8 divisors (see below), whose sum is σ = 1314144. Its totient is φ = 1230528.

The previous prime is 1271939. The next prime is 1271953. The reversal of 1271947 is 7491721.

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 1271947 - 2³ = 1271939 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1271927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5343 + ... + 5575.

It is an arithmetic number, because the mean of its divisors is an integer number (164268).

2^1271947 is an apocalyptic number.

1271947 is a deficient number, since it is larger than the sum of its proper divisors (42197).

1271947 is a wasteful number, since it uses less digits than its factorization.

1271947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 3528, while the sum is 31.

The square root of 1271947 is about 1127.8062776913. The cubic root of 1271947 is about 108.3485254171.

The spelling of 1271947 in words is "one million, two hundred seventy-one thousand, nine hundred forty-seven".