124402123 has 4 divisors (see below), whose sum is σ = 124475080. Its totient is φ = 124329168.

The previous prime is 124402121. The next prime is 124402127. The reversal of 124402123 is 321204421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321204421 = 113 ⋅2842517.

It is a cyclic number.

It is not a de Polignac number, because 124402123 - 2¹ = 124402121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124402123.

It is not an unprimeable number, because it can be changed into a prime (124402121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33858 + ... + 37351.

It is an arithmetic number, because the mean of its divisors is an integer number (31118770).

Almost surely, 2^124402123 is an apocalyptic number.

124402123 is a deficient number, since it is larger than the sum of its proper divisors (72957).

124402123 is an equidigital number, since it uses as much as digits as its factorization.

124402123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72956.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 124402123 is about 11153.5699666071. The cubic root of 124402123 is about 499.2015563207.

Adding to 124402123 its reverse (321204421), we get a palindrome (445606544).

The spelling of 124402123 in words is "one hundred twenty-four million, four hundred two thousand, one hundred twenty-three".