142111201 has 4 divisors (see below), whose sum is σ = 142232112. Its totient is φ = 141990292.

The previous prime is 142111187. The next prime is 142111213. The reversal of 142111201 is 102111241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142111201 - 2⁵ = 142111169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142111231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58675 + ... + 61048.

It is an arithmetic number, because the mean of its divisors is an integer number (35558028).

Almost surely, 2^142111201 is an apocalyptic number.

It is an amenable number.

142111201 is a deficient number, since it is larger than the sum of its proper divisors (120911).

142111201 is a wasteful number, since it uses less digits than its factorization.

142111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120910.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 142111201 is about 11921.0402650104. The cubic root of 142111201 is about 521.8464938641.

Adding to 142111201 its reverse (102111241), we get a palindrome (244222442).

The spelling of 142111201 in words is "one hundred forty-two million, one hundred eleven thousand, two hundred one".