105241421491 has 4 divisors (see below), whose sum is σ = 108085784272. Its totient is φ = 102397058712.

The previous prime is 105241421437. The next prime is 105241421497. The reversal of 105241421491 is 194124142501.

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 105241421491 - 2⁹ = 105241420979 is a prime.

It is a super-2 number, since 2×105241421491² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105241421497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1422181335 + ... + 1422181408.

It is an arithmetic number, because the mean of its divisors is an integer number (27021446068).

Almost surely, 2^105241421491 is an apocalyptic number.

105241421491 is a deficient number, since it is larger than the sum of its proper divisors (2844362781).

105241421491 is an equidigital number, since it uses as much as digits as its factorization.

105241421491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844362780.

The product of its (nonzero) digits is 11520, while the sum is 34.

Adding to 105241421491 its reverse (194124142501), we get a palindrome (299365563992).

The spelling of 105241421491 in words is "one hundred five billion, two hundred forty-one million, four hundred twenty-one thousand, four hundred ninety-one".