1027091 has 12 divisors (see below), whose sum is σ = 1157856. Its totient is φ = 905280.

The previous prime is 1027067. The next prime is 1027097. The reversal of 1027091 is 1907201.

It is not a de Polignac number, because 1027091 - 2⁶ = 1027027 is a prime.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1027097) 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 11 ways as a sum of consecutive naturals, for example, 21830 + ... + 21876.

It is an arithmetic number, because the mean of its divisors is an integer number (96488).

2^1027091 is an apocalyptic number.

1027091 is a deficient number, since it is larger than the sum of its proper divisors (130765).

1027091 is an equidigital number, since it uses as much as digits as its factorization.

1027091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1027091 is about 1013.4549817333. The cubic root of 1027091 is about 100.8949992005.

The spelling of 1027091 in words is "one million, twenty-seven thousand, ninety-one".