78120359 has 2 divisors, whose sum is σ = 78120360. Its totient is φ = 78120358.

The previous prime is 78120353. The next prime is 78120437. The reversal of 78120359 is 95302187.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78120359 - 2⁸ = 78120103 is a prime.

It is a super-2 number, since 2×78120359² = 12205580980577762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78120353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39060179 + 39060180.

It is an arithmetic number, because the mean of its divisors is an integer number (39060180).

Almost surely, 2^78120359 is an apocalyptic number.

78120359 is a deficient number, since it is larger than the sum of its proper divisors (1).

78120359 is an equidigital number, since it uses as much as digits as its factorization.

78120359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 78120359 is about 8838.5722263271. The cubic root of 78120359 is about 427.4855214366.

The spelling of 78120359 in words is "seventy-eight million, one hundred twenty thousand, three hundred fifty-nine".