120641777 has 2 divisors, whose sum is σ = 120641778. Its totient is φ = 120641776.

The previous prime is 120641761. The next prime is 120641779. The reversal of 120641777 is 777146021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108972721 + 11669056 = 10439^2 + 3416^2 .

It is a cyclic number.

It is not a de Polignac number, because 120641777 - 2⁴ = 120641761 is a prime.

Together with 120641779, 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 (120641779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60320888 + 60320889.

It is an arithmetic number, because the mean of its divisors is an integer number (60320889).

Almost surely, 2^120641777 is an apocalyptic number.

It is an amenable number.

120641777 is a deficient number, since it is larger than the sum of its proper divisors (1).

120641777 is an equidigital number, since it uses as much as digits as its factorization.

120641777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 120641777 is about 10983.7050670527. The cubic root of 120641777 is about 494.1201620523.

Adding to 120641777 its reverse (777146021), we get a palindrome (897787798).

The spelling of 120641777 in words is "one hundred twenty million, six hundred forty-one thousand, seven hundred seventy-seven".