142311111 has 8 divisors (see below), whose sum is σ = 195869184. Its totient is φ = 91813560.

The previous prime is 142311107. The next prime is 142311137. The reversal of 142311111 is 111113241.

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

It is not a de Polignac number, because 142311111 - 2² = 142311107 is a prime.

142311111 is a modest number, since divided by 11111 gives 1423 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142311101) 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, 765021 + ... + 765206.

It is an arithmetic number, because the mean of its divisors is an integer number (24483648).

Almost surely, 2^142311111 is an apocalyptic number.

142311111 is a deficient number, since it is larger than the sum of its proper divisors (53558073).

142311111 is a wasteful number, since it uses less digits than its factorization.

142311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530261.

The product of its digits is 24, while the sum is 15.

The square root of 142311111 is about 11929.4220731769. The cubic root of 142311111 is about 522.0910756957.

Adding to 142311111 its reverse (111113241), we get a palindrome (253424352).

The spelling of 142311111 in words is "one hundred forty-two million, three hundred eleven thousand, one hundred eleven".