124021423 has 4 divisors (see below), whose sum is σ = 124100680. Its totient is φ = 123942168.

The previous prime is 124021393. The next prime is 124021439. The reversal of 124021423 is 324120421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324120421 = 379 ⋅855199.

It is a cyclic number.

It is not a de Polignac number, because 124021423 - 2¹³ = 124013231 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 124021423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124021463) 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, 37233 + ... + 40426.

It is an arithmetic number, because the mean of its divisors is an integer number (31025170).

Almost surely, 2^124021423 is an apocalyptic number.

124021423 is a deficient number, since it is larger than the sum of its proper divisors (79257).

124021423 is an equidigital number, since it uses as much as digits as its factorization.

124021423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79256.

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

The square root of 124021423 is about 11136.4906052131. The cubic root of 124021423 is about 498.6918109344.

Adding to 124021423 its reverse (324120421), we get a palindrome (448141844).

The spelling of 124021423 in words is "one hundred twenty-four million, twenty-one thousand, four hundred twenty-three".