105420111 has 8 divisors (see below), whose sum is σ = 148828464. Its totient is φ = 66145920.

The previous prime is 105420101. The next prime is 105420149. The reversal of 105420111 is 111024501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105420111 - 2⁷ = 105419983 is a prime.

It is a super-2 number, since 2×105420111² = 22226799606504642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105420101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033480 + ... + 1033581.

It is an arithmetic number, because the mean of its divisors is an integer number (18603558).

Almost surely, 2^105420111 is an apocalyptic number.

105420111 is a deficient number, since it is larger than the sum of its proper divisors (43408353).

105420111 is a wasteful number, since it uses less digits than its factorization.

105420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067081.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 105420111 is about 10267.4296199195. The cubic root of 105420111 is about 472.3977528540.

Adding to 105420111 its reverse (111024501), we get a palindrome (216444612).

The spelling of 105420111 in words is "one hundred five million, four hundred twenty thousand, one hundred eleven".