120561769 has 2 divisors, whose sum is σ = 120561770. Its totient is φ = 120561768.

The previous prime is 120561767. The next prime is 120561817. The reversal of 120561769 is 967165021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120560400 + 1369 = 10980^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 120561769 - 2¹ = 120561767 is a prime.

It is a super-2 number, since 2×120561769² = 29070280288818722, which contains 22 as substring.

Together with 120561767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120561761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60280884 + 60280885.

It is an arithmetic number, because the mean of its divisors is an integer number (60280885).

Almost surely, 2^120561769 is an apocalyptic number.

It is an amenable number.

120561769 is a deficient number, since it is larger than the sum of its proper divisors (1).

120561769 is an equidigital number, since it uses as much as digits as its factorization.

120561769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 120561769 is about 10980.0623404423. The cubic root of 120561769 is about 494.0109066199.

The spelling of 120561769 in words is "one hundred twenty million, five hundred sixty-one thousand, seven hundred sixty-nine".