200142454 has 4 divisors (see below), whose sum is σ = 300213684. Its totient is φ = 100071226.

The previous prime is 200142451. The next prime is 200142457. The reversal of 200142454 is 454241002.

It is a happy number.

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 (200142451) and next prime (200142457).

It is a Smith number, since the sum of its digits (22) 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 not an unprimeable number, because it can be changed into a prime (200142451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50035612 + ... + 50035615.

It is an arithmetic number, because the mean of its divisors is an integer number (75053421).

Almost surely, 2^200142454 is an apocalyptic number.

200142454 is a deficient number, since it is larger than the sum of its proper divisors (100071230).

200142454 is a wasteful number, since it uses less digits than its factorization.

200142454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100071229.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 200142454 is about 14147.1712366819. The cubic root of 200142454 is about 584.9423606980.

Adding to 200142454 its reverse (454241002), we get a palindrome (654383456).

The spelling of 200142454 in words is "two hundred million, one hundred forty-two thousand, four hundred fifty-four".