200045123 has 4 divisors (see below), whose sum is σ = 200079528. Its totient is φ = 200010720.

The previous prime is 200045119. The next prime is 200045141. The reversal of 200045123 is 321540002.

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 200045123 - 2² = 200045119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200041123) 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, 6086 + ... + 20907.

It is an arithmetic number, because the mean of its divisors is an integer number (50019882).

Almost surely, 2^200045123 is an apocalyptic number.

200045123 is a deficient number, since it is larger than the sum of its proper divisors (34405).

200045123 is an equidigital number, since it uses as much as digits as its factorization.

200045123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34404.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 200045123 is about 14143.7308727224. The cubic root of 200045123 is about 584.8475244863.

Adding to 200045123 its reverse (321540002), we get a palindrome (521585125).

The spelling of 200045123 in words is "two hundred million, forty-five thousand, one hundred twenty-three".