120691 has 2 divisors, whose sum is σ = 120692. Its totient is φ = 120690.

The previous prime is 120689. The next prime is 120709. The reversal of 120691 is 196021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120691 - 2¹ = 120689 is a prime.

Together with 120689, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60345 + 60346.

It is an arithmetic number, because the mean of its divisors is an integer number (60346).

2¹²⁰⁶⁹¹ is an apocalyptic number.

120691 is a deficient number, since it is larger than the sum of its proper divisors (1).

120691 is an equidigital number, since it uses as much as digits as its factorization.

120691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 120691 is about 347.4061024219. The cubic root of 120691 is about 49.4187354834.

It can be divided in two parts, 1206 and 91, that multiplied together give a triangular number (109746 = T₄₆₈).

The spelling of 120691 in words is "one hundred twenty thousand, six hundred ninety-one".