200717642542 has 4 divisors (see below), whose sum is σ = 301076463816. Its totient is φ = 100358821270.

The previous prime is 200717642507. The next prime is 200717642549. The reversal of 200717642542 is 245246717002.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 200717642495 and 200717642504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200717642549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50179410634 + ... + 50179410637.

It is an arithmetic number, because the mean of its divisors is an integer number (75269115954).

Almost surely, 2^200717642542 is an apocalyptic number.

200717642542 is a deficient number, since it is larger than the sum of its proper divisors (100358821274).

200717642542 is a wasteful number, since it uses less digits than its factorization.

200717642542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100358821273.

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 200717642542 in words is "two hundred billion, seven hundred seventeen million, six hundred forty-two thousand, five hundred forty-two".