1127971 has 4 divisors (see below), whose sum is σ = 1214752. Its totient is φ = 1041192.

The previous prime is 1127969. The next prime is 1127981. The reversal of 1127971 is 1797211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1797211 = 13 ⋅138247.

It is a cyclic number.

It is not a de Polignac number, because 1127971 - 2¹ = 1127969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1127911) 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, 43371 + ... + 43396.

It is an arithmetic number, because the mean of its divisors is an integer number (303688).

2^1127971 is an apocalyptic number.

1127971 is a deficient number, since it is larger than the sum of its proper divisors (86781).

1127971 is an equidigital number, since it uses as much as digits as its factorization.

1127971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86780.

The product of its digits is 882, while the sum is 28.

The square root of 1127971 is about 1062.0597911606. The cubic root of 1127971 is about 104.0956651798.

The spelling of 1127971 in words is "one million, one hundred twenty-seven thousand, nine hundred seventy-one".