105420789 has 6 divisors (see below), whose sum is σ = 152274486. Its totient is φ = 70280520.

The previous prime is 105420779. The next prime is 105420811. The reversal of 105420789 is 987024501.

It can be written as a sum of positive squares in only one way, i.e., 76422564 + 28998225 = 8742^2 + 5385^2 .

It is not a de Polignac number, because 105420789 - 2⁴ = 105420773 is a prime.

It is a super-2 number, since 2×105420789² = 22227085506765042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105420719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5856702 + ... + 5856719.

It is an arithmetic number, because the mean of its divisors is an integer number (25379081).

Almost surely, 2^105420789 is an apocalyptic number.

It is an amenable number.

105420789 is a deficient number, since it is larger than the sum of its proper divisors (46853697).

105420789 is a wasteful number, since it uses less digits than its factorization.

105420789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11713427 (or 11713424 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 105420789 is about 10267.4626368933. The cubic root of 105420789 is about 472.3987655798.

The spelling of 105420789 in words is "one hundred five million, four hundred twenty thousand, seven hundred eighty-nine".