105140142731227 has 4 divisors (see below), whose sum is σ = 105149469465000. Its totient is φ = 105130815997456.

The previous prime is 105140142731209. The next prime is 105140142731237. The reversal of 105140142731227 is 722137241041501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105140142731227 is a prime.

It is a super-2 number, since 2×105140142731227² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105140142731227.

It is not an unprimeable number, because it can be changed into a prime (105140142731237) 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, 4663349977 + ... + 4663372522.

It is an arithmetic number, because the mean of its divisors is an integer number (26287367366250).

Almost surely, 2^{105140142731227} is an apocalyptic number.

105140142731227 is a deficient number, since it is larger than the sum of its proper divisors (9326733773).

105140142731227 is an equidigital number, since it uses as much as digits as its factorization.

105140142731227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9326733772.

The product of its (nonzero) digits is 94080, while the sum is 40.

Adding to 105140142731227 its reverse (722137241041501), we get a palindrome (827277383772728).

The spelling of 105140142731227 in words is "one hundred five trillion, one hundred forty billion, one hundred forty-two million, seven hundred thirty-one thousand, two hundred twenty-seven".