7120891 has 2 divisors, whose sum is σ = 7120892. Its totient is φ = 7120890.

The previous prime is 7120879. The next prime is 7120903. The reversal of 7120891 is 1980217.

It is a balanced prime because it is at equal distance from previous prime (7120879) and next prime (7120903).

It is a cyclic number.

It is not a de Polignac number, because 7120891 - 2¹⁷ = 6989819 is a prime.

It is a super-4 number, since 4×7120891⁴ (a number of 29 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (7120811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3560445 + 3560446.

It is an arithmetic number, because the mean of its divisors is an integer number (3560446).

Almost surely, 2^7120891 is an apocalyptic number.

7120891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7120891 is an equidigital number, since it uses as much as digits as its factorization.

7120891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 7120891 is about 2668.4997657860. The cubic root of 7120891 is about 192.3880588281.

The spelling of 7120891 in words is "seven million, one hundred twenty thousand, eight hundred ninety-one".