20032123 has 4 divisors (see below), whose sum is σ = 20054440. Its totient is φ = 20009808.

The previous prime is 20032097. The next prime is 20032141. The reversal of 20032123 is 32123002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32123002 = 2 ⋅16061501.

It is a cyclic number.

It is not a de Polignac number, because 20032123 - 2¹³ = 20023931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20032163) 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, 9753 + ... + 11626.

It is an arithmetic number, because the mean of its divisors is an integer number (5013610).

Almost surely, 2^20032123 is an apocalyptic number.

20032123 is a deficient number, since it is larger than the sum of its proper divisors (22317).

20032123 is an equidigital number, since it uses as much as digits as its factorization.

20032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22316.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20032123 is about 4475.7259746325. The cubic root of 20032123 is about 271.5870093192.

Adding to 20032123 its reverse (32123002), we get a palindrome (52155125).

It can be divided in two parts, 200 and 32123, that added together give a palindrome (32323).

The spelling of 20032123 in words is "twenty million, thirty-two thousand, one hundred twenty-three".