105420302491 has 8 divisors (see below), whose sum is σ = 120482350560. Its totient is φ = 90358755648.

The previous prime is 105420302479. The next prime is 105420302629. The reversal of 105420302491 is 194203024501.

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

It is not a de Polignac number, because 105420302491 - 2⁵ = 105420302459 is a prime.

It is a super-2 number, since 2×105420302491² (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 (105420302441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624615 + ... + 775231.

It is an arithmetic number, because the mean of its divisors is an integer number (15060293820).

Almost surely, 2^105420302491 is an apocalyptic number.

105420302491 is a deficient number, since it is larger than the sum of its proper divisors (15062048069).

105420302491 is an equidigital number, since it uses as much as digits as its factorization.

105420302491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250613.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 105420302491 its reverse (194203024501), we get a palindrome (299623326992).

The spelling of 105420302491 in words is "one hundred five billion, four hundred twenty million, three hundred two thousand, four hundred ninety-one".