142543311 has 4 divisors (see below), whose sum is σ = 190057752. Its totient is φ = 95028872.

The previous prime is 142543309. The next prime is 142543361. The reversal of 142543311 is 113345241.

It is a happy number.

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 142543311 - 2¹ = 142543309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142543361) 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, 23757216 + ... + 23757221.

It is an arithmetic number, because the mean of its divisors is an integer number (47514438).

Almost surely, 2^142543311 is an apocalyptic number.

142543311 is a deficient number, since it is larger than the sum of its proper divisors (47514441).

142543311 is an equidigital number, since it uses as much as digits as its factorization.

142543311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47514440.

The product of its digits is 1440, while the sum is 24.

The square root of 142543311 is about 11939.1503466537. The cubic root of 142543311 is about 522.3748756802.

Adding to 142543311 its reverse (113345241), we get a palindrome (255888552).

The spelling of 142543311 in words is "one hundred forty-two million, five hundred forty-three thousand, three hundred eleven".