201042111 has 8 divisors (see below), whose sum is σ = 269764144. Its totient is φ = 133174080.

The previous prime is 201042013. The next prime is 201042113. The reversal of 201042111 is 111240102.

It is a happy number.

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

It is not a de Polignac number, because 201042111 - 2¹³ = 201033919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201042113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212950 + ... + 213891.

It is an arithmetic number, because the mean of its divisors is an integer number (33720518).

Almost surely, 2^201042111 is an apocalyptic number.

201042111 is a deficient number, since it is larger than the sum of its proper divisors (68722033).

201042111 is a wasteful number, since it uses less digits than its factorization.

201042111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427001.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 201042111 is about 14178.9319414404. The cubic root of 201042111 is about 585.8175055983.

Adding to 201042111 its reverse (111240102), we get a palindrome (312282213).

The spelling of 201042111 in words is "two hundred one million, forty-two thousand, one hundred eleven".