142031111 has 8 divisors (see below), whose sum is σ = 142990848. Its totient is φ = 141075000.

The previous prime is 142031081. The next prime is 142031143. The reversal of 142031111 is 111130241.

142031111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 142031111 - 2¹⁴ = 142014727 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 (142031161) 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, 142826 + ... + 143816.

It is an arithmetic number, because the mean of its divisors is an integer number (17873856).

Almost surely, 2^142031111 is an apocalyptic number.

142031111 is a deficient number, since it is larger than the sum of its proper divisors (959737).

142031111 is an equidigital number, since it uses as much as digits as its factorization.

142031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 142031111 is about 11917.6806048828. The cubic root of 142031111 is about 521.7484426213.

Adding to 142031111 its reverse (111130241), we get a palindrome (253161352).

The spelling of 142031111 in words is "one hundred forty-two million, thirty-one thousand, one hundred eleven".