105123404 has 18 divisors (see below), whose sum is σ = 186368364. Its totient is φ = 51884040.

The previous prime is 105123397. The next prime is 105123407. The reversal of 105123404 is 404321501.

It is a super-2 number, since 2×105123404² = 22101860137094432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105123407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22859 + ... + 27069.

It is an arithmetic number, because the mean of its divisors is an integer number (10353798).

Almost surely, 2^105123404 is an apocalyptic number.

It is an amenable number.

105123404 is a deficient number, since it is larger than the sum of its proper divisors (81244960).

105123404 is an equidigital number, since it uses as much as digits as its factorization.

105123404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373 (or 4292 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 105123404 is about 10252.9704963976. The cubic root of 105123404 is about 471.9541454544.

Adding to 105123404 its reverse (404321501), we get a palindrome (509444905).

The spelling of 105123404 in words is "one hundred five million, one hundred twenty-three thousand, four hundred four".