200400142 has 4 divisors (see below), whose sum is σ = 300600216. Its totient is φ = 100200070.

The previous prime is 200400133. The next prime is 200400181. The reversal of 200400142 is 241004002.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50100034 + ... + 50100037.

It is an arithmetic number, because the mean of its divisors is an integer number (75150054).

Almost surely, 2^200400142 is an apocalyptic number.

200400142 is a deficient number, since it is larger than the sum of its proper divisors (100200074).

200400142 is a wasteful number, since it uses less digits than its factorization.

200400142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100200073.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 200400142 is about 14156.2757107934. The cubic root of 200400142 is about 585.1932952693.

Adding to 200400142 its reverse (241004002), we get a palindrome (441404144).

The spelling of 200400142 in words is "two hundred million, four hundred thousand, one hundred forty-two".