123020023 has 4 divisors (see below), whose sum is σ = 140594320. Its totient is φ = 105445728.

The previous prime is 123020011. The next prime is 123020047. The reversal of 123020023 is 320020321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123020023 - 2⁵ = 123019991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123019985 and 123020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020423) 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, 8787138 + ... + 8787151.

It is an arithmetic number, because the mean of its divisors is an integer number (35148580).

Almost surely, 2^123020023 is an apocalyptic number.

123020023 is a deficient number, since it is larger than the sum of its proper divisors (17574297).

123020023 is an equidigital number, since it uses as much as digits as its factorization.

123020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17574296.

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

The square root of 123020023 is about 11091.4391762296. The cubic root of 123020023 is about 497.3459678193.

Adding to 123020023 its reverse (320020321), we get a palindrome (443040344).

The spelling of 123020023 in words is "one hundred twenty-three million, twenty thousand, twenty-three".