111142133 has 2 divisors, whose sum is σ = 111142134. Its totient is φ = 111142132.

The previous prime is 111142127. The next prime is 111142217. The reversal of 111142133 is 331241111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88322404 + 22819729 = 9398^2 + 4777^2 .

It is a cyclic number.

It is not a de Polignac number, because 111142133 - 2¹⁰ = 111141109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111142033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571066 + 55571067.

It is an arithmetic number, because the mean of its divisors is an integer number (55571067).

Almost surely, 2^111142133 is an apocalyptic number.

It is an amenable number.

111142133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111142133 is an equidigital number, since it uses as much as digits as its factorization.

111142133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 111142133 is about 10542.3969285927. The cubic root of 111142133 is about 480.7945939118.

Adding to 111142133 its reverse (331241111), we get a palindrome (442383244).

The spelling of 111142133 in words is "one hundred eleven million, one hundred forty-two thousand, one hundred thirty-three".