124405123 has 2 divisors, whose sum is σ = 124405124. Its totient is φ = 124405122.

The previous prime is 124405117. The next prime is 124405153. The reversal of 124405123 is 321504421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124405123 - 2⁹ = 124404611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124405094 and 124405103.

It is not a weakly prime, because it can be changed into another prime (124405153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62202561 + 62202562.

It is an arithmetic number, because the mean of its divisors is an integer number (62202562).

Almost surely, 2^124405123 is an apocalyptic number.

124405123 is a deficient number, since it is larger than the sum of its proper divisors (1).

124405123 is an equidigital number, since it uses as much as digits as its factorization.

124405123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 124405123 is about 11153.7044518850. The cubic root of 124405123 is about 499.2055690942.

Adding to 124405123 its reverse (321504421), we get a palindrome (445909544).

The spelling of 124405123 in words is "one hundred twenty-four million, four hundred five thousand, one hundred twenty-three".