200142591 has 24 divisors (see below), whose sum is σ = 299588352. Its totient is φ = 118707600.

The previous prime is 200142587. The next prime is 200142623. The reversal of 200142591 is 195241002.

It is not a de Polignac number, because 200142591 - 2² = 200142587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200142571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11196 + ... + 22926.

It is an arithmetic number, because the mean of its divisors is an integer number (12482848).

Almost surely, 2^200142591 is an apocalyptic number.

200142591 is a deficient number, since it is larger than the sum of its proper divisors (99445761).

200142591 is a wasteful number, since it uses less digits than its factorization.

200142591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11803 (or 11792 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 200142591 is about 14147.1760786385. The cubic root of 200142591 is about 584.9424941647.

Adding to 200142591 its reverse (195241002), we get a palindrome (395383593).

The spelling of 200142591 in words is "two hundred million, one hundred forty-two thousand, five hundred ninety-one".