124103405 has 4 divisors (see below), whose sum is σ = 148924092. Its totient is φ = 99282720.

The previous prime is 124103401. The next prime is 124103437. The reversal of 124103405 is 504301421.

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 19307236 + 104796169 = 4394^2 + 10237^2 .

It is not a de Polignac number, because 124103405 - 2² = 124103401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124103401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12410336 + ... + 12410345.

It is an arithmetic number, because the mean of its divisors is an integer number (37231023).

Almost surely, 2^124103405 is an apocalyptic number.

It is an amenable number.

124103405 is a deficient number, since it is larger than the sum of its proper divisors (24820687).

124103405 is an equidigital number, since it uses as much as digits as its factorization.

124103405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24820686.

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

The square root of 124103405 is about 11140.1707796604. The cubic root of 124103405 is about 498.8016703063.

Adding to 124103405 its reverse (504301421), we get a palindrome (628404826).

The spelling of 124103405 in words is "one hundred twenty-four million, one hundred three thousand, four hundred five".