201042642 has 8 divisors (see below), whose sum is σ = 402085296. Its totient is φ = 67014212.

The previous prime is 201042631. The next prime is 201042643. The reversal of 201042642 is 246240102.

It is a sphenic number, since it is the product of 3 distinct primes.

201042642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (201042643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16753548 + ... + 16753559.

It is an arithmetic number, because the mean of its divisors is an integer number (50260662).

Almost surely, 2^201042642 is an apocalyptic number.

201042642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201042642 is a wasteful number, since it uses less digits than its factorization.

201042642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33507112.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 201042642 is about 14178.9506663928. The cubic root of 201042642 is about 585.8180213589.

Adding to 201042642 its reverse (246240102), we get a palindrome (447282744).

The spelling of 201042642 in words is "two hundred one million, forty-two thousand, six hundred forty-two".