200142442 has 4 divisors (see below), whose sum is σ = 300213666. Its totient is φ = 100071220.

The previous prime is 200142433. The next prime is 200142451. The reversal of 200142442 is 244241002.

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

It is an interprime number because it is at equal distance from previous prime (200142433) and next prime (200142451).

It can be written as a sum of positive squares in only one way, i.e., 199120321 + 1022121 = 14111^2 + 1011^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50035609 + ... + 50035612.

Almost surely, 2^200142442 is an apocalyptic number.

200142442 is a deficient number, since it is larger than the sum of its proper divisors (100071224).

200142442 is a wasteful number, since it uses less digits than its factorization.

200142442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100071223.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 200142442 is about 14147.1708125689. The cubic root of 200142442 is about 584.9423490074.

Adding to 200142442 its reverse (244241002), we get a palindrome (444383444).

The spelling of 200142442 in words is "two hundred million, one hundred forty-two thousand, four hundred forty-two".