120720877 has 2 divisors, whose sum is σ = 120720878. Its totient is φ = 120720876.

The previous prime is 120720857. The next prime is 120720923. The reversal of 120720877 is 778027021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64979721 + 55741156 = 8061^2 + 7466^2 .

It is an emirp because it is prime and its reverse (778027021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120720877 - 2⁷ = 120720749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120720857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60360438 + 60360439.

It is an arithmetic number, because the mean of its divisors is an integer number (60360439).

Almost surely, 2^120720877 is an apocalyptic number.

It is an amenable number.

120720877 is a deficient number, since it is larger than the sum of its proper divisors (1).

120720877 is an equidigital number, since it uses as much as digits as its factorization.

120720877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 120720877 is about 10987.3052656236. The cubic root of 120720877 is about 494.2281300845.

Adding to 120720877 its reverse (778027021), we get a palindrome (898747898).

The spelling of 120720877 in words is "one hundred twenty million, seven hundred twenty thousand, eight hundred seventy-seven".