201838542 has 8 divisors (see below), whose sum is σ = 403677096. Its totient is φ = 67279512.

The previous prime is 201838541. The next prime is 201838573. The reversal of 201838542 is 245838102.

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

201838542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201838541) 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, 16819873 + ... + 16819884.

It is an arithmetic number, because the mean of its divisors is an integer number (50459637).

Almost surely, 2^201838542 is an apocalyptic number.

201838542 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.

201838542 is a wasteful number, since it uses less digits than its factorization.

201838542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33639762.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 201838542 is about 14206.9891954629. The cubic root of 201838542 is about 586.5900609484.

The spelling of 201838542 in words is "two hundred one million, eight hundred thirty-eight thousand, five hundred forty-two".