200103142123 has 4 divisors (see below), whose sum is σ = 200105076528. Its totient is φ = 200101207720.

The previous prime is 200103142103. The next prime is 200103142133. The reversal of 200103142123 is 321241301002.

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 200103142123 - 2²¹ = 200101044971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200103142123.

It is not an unprimeable number, because it can be changed into a prime (200103142103) 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, 802711 + ... + 1022032.

It is an arithmetic number, because the mean of its divisors is an integer number (50026269132).

Almost surely, 2^200103142123 is an apocalyptic number.

200103142123 is a deficient number, since it is larger than the sum of its proper divisors (1934405).

200103142123 is a wasteful number, since it uses less digits than its factorization.

200103142123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934404.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 200103142123 its reverse (321241301002), we get a palindrome (521344443125).

The spelling of 200103142123 in words is "two hundred billion, one hundred three million, one hundred forty-two thousand, one hundred twenty-three".