200010123 has 12 divisors (see below), whose sum is σ = 296712208. Its totient is φ = 129736080.

The previous prime is 200010121. The next prime is 200010127. The reversal of 200010123 is 321010002.

It is a happy number.

It is not a de Polignac number, because 200010123 - 2¹ = 200010121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200010121) 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, 299983 + ... + 300648.

Almost surely, 2^200010123 is an apocalyptic number.

200010123 is a deficient number, since it is larger than the sum of its proper divisors (96702085).

200010123 is a wasteful number, since it uses less digits than its factorization.

200010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600674 (or 600671 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 200010123 is about 14142.4935212996. The cubic root of 200010123 is about 584.8134140866.

Adding to 200010123 its reverse (321010002), we get a palindrome (521020125).

The spelling of 200010123 in words is "two hundred million, ten thousand, one hundred twenty-three".