201100042 has 32 divisors (see below), whose sum is σ = 360226944. Its totient is φ = 82987200.

The previous prime is 201100027. The next prime is 201100049. The reversal of 201100042 is 240001102.

It is not an unprimeable number, because it can be changed into a prime (201100049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11683 + ... + 23209.

It is an arithmetic number, because the mean of its divisors is an integer number (11257092).

Almost surely, 2^201100042 is an apocalyptic number.

201100042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201100042 is a deficient number, since it is larger than the sum of its proper divisors (159126902).

201100042 is a wasteful number, since it uses less digits than its factorization.

201100042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11614.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 201100042 is about 14180.9746491558. The cubic root of 201100042 is about 585.8737686611.

Adding to 201100042 its reverse (240001102), we get a palindrome (441101144).

The spelling of 201100042 in words is "two hundred one million, one hundred thousand, forty-two".