105124123203 has 48 divisors (see below), whose sum is σ = 158715002880. Its totient is φ = 61373232000.

The previous prime is 105124123199. The next prime is 105124123211. The reversal of 105124123203 is 302321421501.

It is not a de Polignac number, because 105124123203 - 2² = 105124123199 is a prime.

It is a super-2 number, since 2×105124123203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105124123283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4551358 + ... + 4574396.

It is an arithmetic number, because the mean of its divisors is an integer number (3306562560).

Almost surely, 2^105124123203 is an apocalyptic number.

105124123203 is a deficient number, since it is larger than the sum of its proper divisors (53590879677).

105124123203 is a wasteful number, since it uses less digits than its factorization.

105124123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23228 (or 23191 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 105124123203 its reverse (302321421501), we get a palindrome (407445544704).

The spelling of 105124123203 in words is "one hundred five billion, one hundred twenty-four million, one hundred twenty-three thousand, two hundred three".