7120091 has 8 divisors (see below), whose sum is σ = 7848624. Its totient is φ = 6405120.

The previous prime is 7120063. The next prime is 7120097. The reversal of 7120091 is 1900217.

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 7120091 - 2¹⁰ = 7119067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7120097) 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, 2270 + ... + 4403.

It is an arithmetic number, because the mean of its divisors is an integer number (981078).

Almost surely, 2^7120091 is an apocalyptic number.

7120091 is a deficient number, since it is larger than the sum of its proper divisors (728533).

7120091 is a wasteful number, since it uses less digits than its factorization.

7120091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781.

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

The square root of 7120091 is about 2668.3498646167. The cubic root of 7120091 is about 192.3808539146.

Adding to 7120091 its product of nonzero digits (126), we get a palindrome (7120217).

The spelling of 7120091 in words is "seven million, one hundred twenty thousand, ninety-one".