200442681 has 24 divisors (see below), whose sum is σ = 303261504. Its totient is φ = 132289200.

The previous prime is 200442679. The next prime is 200442689. The reversal of 200442681 is 186244002.

It is not a de Polignac number, because 200442681 - 2¹ = 200442679 is a prime.

It is a super-2 number, since 2×200442681² = 80354536732935522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200442689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20460 + ... + 28626.

It is an arithmetic number, because the mean of its divisors is an integer number (12635896).

Almost surely, 2^200442681 is an apocalyptic number.

It is an amenable number.

200442681 is a deficient number, since it is larger than the sum of its proper divisors (102818823).

200442681 is an equidigital number, since it uses as much as digits as its factorization.

200442681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8283 (or 8271 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 200442681 is about 14157.7781095764. The cubic root of 200442681 is about 585.2346987270.

Adding to 200442681 its reverse (186244002), we get a palindrome (386686683).

The spelling of 200442681 in words is "two hundred million, four hundred forty-two thousand, six hundred eighty-one".