142242111 has 48 divisors (see below), whose sum is σ = 239016960. Its totient is φ = 80559360.

The previous prime is 142242109. The next prime is 142242137. The reversal of 142242111 is 111242241.

It is not a de Polignac number, because 142242111 - 2¹ = 142242109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142242211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 375120 + ... + 375498.

It is an arithmetic number, because the mean of its divisors is an integer number (4979520).

Almost surely, 2^142242111 is an apocalyptic number.

142242111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142242111 is a deficient number, since it is larger than the sum of its proper divisors (96774849).

142242111 is a wasteful number, since it uses less digits than its factorization.

142242111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 633 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 142242111 is about 11926.5297132066. The cubic root of 142242111 is about 522.0066828756.

Adding to 142242111 its reverse (111242241), we get a palindrome (253484352).

The spelling of 142242111 in words is "one hundred forty-two million, two hundred forty-two thousand, one hundred eleven".