20120023 has 16 divisors (see below), whose sum is σ = 25896960. Its totient is φ = 15170400.

The previous prime is 20119991. The next prime is 20120029. The reversal of 20120023 is 32002102.

It is not a de Polignac number, because 20120023 - 2⁵ = 20119991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20119991 and 20120009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1828 + ... + 6601.

It is an arithmetic number, because the mean of its divisors is an integer number (1618560).

Almost surely, 2^20120023 is an apocalyptic number.

20120023 is a deficient number, since it is larger than the sum of its proper divisors (5776937).

20120023 is a wasteful number, since it uses less digits than its factorization.

20120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8478.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20120023 is about 4485.5348621987. The cubic root of 20120023 is about 271.9836666591.

Adding to 20120023 its reverse (32002102), we get a palindrome (52122125).

The spelling of 20120023 in words is "twenty million, one hundred twenty thousand, twenty-three".