120878717 has 2 divisors, whose sum is σ = 120878718. Its totient is φ = 120878716.

The previous prime is 120878713. The next prime is 120878749. The reversal of 120878717 is 717878021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97732996 + 23145721 = 9886^2 + 4811^2 .

It is a cyclic number.

It is not a de Polignac number, because 120878717 - 2² = 120878713 is a prime.

It is a super-2 number, since 2×120878717² = 29223328447132178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120878713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60439358 + 60439359.

It is an arithmetic number, because the mean of its divisors is an integer number (60439359).

Almost surely, 2^120878717 is an apocalyptic number.

It is an amenable number.

120878717 is a deficient number, since it is larger than the sum of its proper divisors (1).

120878717 is an equidigital number, since it uses as much as digits as its factorization.

120878717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43904, while the sum is 41.

The square root of 120878717 is about 10994.4857542315. The cubic root of 120878717 is about 494.4434338947.

The spelling of 120878717 in words is "one hundred twenty million, eight hundred seventy-eight thousand, seven hundred seventeen".