105040491 has 4 divisors (see below), whose sum is σ = 140053992. Its totient is φ = 70026992.

The previous prime is 105040489. The next prime is 105040499. The reversal of 105040491 is 194040501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105040491 - 2¹ = 105040489 is a prime.

It is a super-2 number, since 2×105040491² = 22067009499042162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105040499) 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 3 ways as a sum of consecutive naturals, for example, 17506746 + ... + 17506751.

It is an arithmetic number, because the mean of its divisors is an integer number (35013498).

Almost surely, 2^105040491 is an apocalyptic number.

105040491 is a deficient number, since it is larger than the sum of its proper divisors (35013501).

105040491 is an equidigital number, since it uses as much as digits as its factorization.

105040491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35013500.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 105040491 is about 10248.9263340118. The cubic root of 105040491 is about 471.8300328245.

Adding to 105040491 its reverse (194040501), we get a palindrome (299080992).

The spelling of 105040491 in words is "one hundred five million, forty thousand, four hundred ninety-one".