20124123 has 8 divisors (see below), whose sum is σ = 26981136. Its totient is φ = 13341600.

The previous prime is 20124113. The next prime is 20124127. The reversal of 20124123 is 32142102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20124123 - 2⁹ = 20123611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20124127) 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 in 7 ways as a sum of consecutive naturals, for example, 17988 + ... + 19073.

It is an arithmetic number, because the mean of its divisors is an integer number (3372642).

Almost surely, 2^20124123 is an apocalyptic number.

20124123 is a deficient number, since it is larger than the sum of its proper divisors (6857013).

20124123 is a wasteful number, since it uses less digits than its factorization.

20124123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37245.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20124123 is about 4485.9918635682. The cubic root of 20124123 is about 272.0021400855.

Adding to 20124123 its reverse (32142102), we get a palindrome (52266225).

The spelling of 20124123 in words is "twenty million, one hundred twenty-four thousand, one hundred twenty-three".