105420779 has 2 divisors, whose sum is σ = 105420780. Its totient is φ = 105420778.

The previous prime is 105420773. The next prime is 105420811. The reversal of 105420779 is 977024501.

It is a weak prime.

It is an emirp because it is prime and its reverse (977024501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105420779 is a prime.

It is a super-2 number, since 2×105420779² = 22227081289933682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105420773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52710389 + 52710390.

It is an arithmetic number, because the mean of its divisors is an integer number (52710390).

Almost surely, 2^105420779 is an apocalyptic number.

105420779 is a deficient number, since it is larger than the sum of its proper divisors (1).

105420779 is an equidigital number, since it uses as much as digits as its factorization.

105420779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 105420779 is about 10267.4621499181. The cubic root of 105420779 is about 472.3987506429.

The spelling of 105420779 in words is "one hundred five million, four hundred twenty thousand, seven hundred seventy-nine".