142043311 has 4 divisors (see below), whose sum is σ = 145507824. Its totient is φ = 138578800.

The previous prime is 142043309. The next prime is 142043323. The reversal of 142043311 is 113340241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142043311 - 2¹ = 142043309 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 (142043351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732195 + ... + 1732276.

It is an arithmetic number, because the mean of its divisors is an integer number (36376956).

Almost surely, 2^142043311 is an apocalyptic number.

142043311 is a deficient number, since it is larger than the sum of its proper divisors (3464513).

142043311 is an equidigital number, since it uses as much as digits as its factorization.

142043311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464512.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 142043311 is about 11918.1924384531. The cubic root of 142043311 is about 521.7633810122.

Adding to 142043311 its reverse (113340241), we get a palindrome (255383552).

The spelling of 142043311 in words is "one hundred forty-two million, forty-three thousand, three hundred eleven".