20055123 has 12 divisors (see below), whose sum is σ = 31602168. Its totient is φ = 12154560.

The previous prime is 20055097. The next prime is 20055131. The reversal of 20055123 is 32155002.

It is a happy number.

It is not a de Polignac number, because 20055123 - 2¹⁸ = 19792979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20055096 and 20055105.

It is not an unprimeable number, because it can be changed into a prime (20055143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101190 + ... + 101387.

It is an arithmetic number, because the mean of its divisors is an integer number (2633514).

Almost surely, 2^20055123 is an apocalyptic number.

20055123 is a deficient number, since it is larger than the sum of its proper divisors (11547045).

20055123 is a wasteful number, since it uses less digits than its factorization.

20055123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202594 (or 202591 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20055123 is about 4478.2946531018. The cubic root of 20055123 is about 271.6909109723.

The spelling of 20055123 in words is "twenty million, fifty-five thousand, one hundred twenty-three".