200459123 has 4 divisors (see below), whose sum is σ = 201476880. Its totient is φ = 199441368.

The previous prime is 200459047. The next prime is 200459137. The reversal of 200459123 is 321954002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321954002 = 2 ⋅160977001.

It is a cyclic number.

It is not a de Polignac number, because 200459123 - 2¹⁶ = 200393587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200459092 and 200459101.

It is not an unprimeable number, because it can be changed into a prime (200459323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508583 + ... + 508976.

It is an arithmetic number, because the mean of its divisors is an integer number (50369220).

Almost surely, 2^200459123 is an apocalyptic number.

200459123 is a deficient number, since it is larger than the sum of its proper divisors (1017757).

200459123 is a wasteful number, since it uses less digits than its factorization.

200459123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017756.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 200459123 is about 14158.3587678798. The cubic root of 200459123 is about 585.2507002522.

The spelling of 200459123 in words is "two hundred million, four hundred fifty-nine thousand, one hundred twenty-three".