142111431 has 96 divisors (see below), whose sum is σ = 276756480. Its totient is φ = 68040000.

The previous prime is 142111427. The next prime is 142111439. The reversal of 142111431 is 134111241.

142111431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142111431 - 2² = 142111427 is a prime.

It is a super-2 number, since 2×142111431² = 40391317641735522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142111439) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 566056 + ... + 566306.

It is an arithmetic number, because the mean of its divisors is an integer number (2882880).

Almost surely, 2^142111431 is an apocalyptic number.

142111431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142111431 is a deficient number, since it is larger than the sum of its proper divisors (134645049).

142111431 is a wasteful number, since it uses less digits than its factorization.

142111431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 334 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 142111431 is about 11921.0499118157. The cubic root of 142111431 is about 521.8467753916.

Adding to 142111431 its reverse (134111241), we get a palindrome (276222672).

The spelling of 142111431 in words is "one hundred forty-two million, one hundred eleven thousand, four hundred thirty-one".