105130405 has 4 divisors (see below), whose sum is σ = 126156492. Its totient is φ = 84104320.

The previous prime is 105130379. The next prime is 105130409. The reversal of 105130405 is 504031501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46867716 + 58262689 = 6846^2 + 7633^2 .

It is a de Polignac number, because none of the positive numbers 2^k-105130405 is a prime.

It is a super-2 number, since 2×105130405² = 22104804110928050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105130409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10513036 + ... + 10513045.

It is an arithmetic number, because the mean of its divisors is an integer number (31539123).

Almost surely, 2^105130405 is an apocalyptic number.

It is an amenable number.

105130405 is a deficient number, since it is larger than the sum of its proper divisors (21026087).

105130405 is an equidigital number, since it uses as much as digits as its factorization.

105130405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21026086.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 105130405 is about 10253.3119039655. The cubic root of 105130405 is about 471.9646222766.

Adding to 105130405 its reverse (504031501), we get a palindrome (609161906).

The spelling of 105130405 in words is "one hundred five million, one hundred thirty thousand, four hundred five".