142144433 has 4 divisors (see below), whose sum is σ = 142337520. Its totient is φ = 141951348.

The previous prime is 142144427. The next prime is 142144441. The reversal of 142144433 is 334441241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142144433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142144423) 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, 95435 + ... + 96912.

It is an arithmetic number, because the mean of its divisors is an integer number (35584380).

Almost surely, 2^142144433 is an apocalyptic number.

It is an amenable number.

142144433 is a deficient number, since it is larger than the sum of its proper divisors (193087).

142144433 is an equidigital number, since it uses as much as digits as its factorization.

142144433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193086.

The product of its digits is 4608, while the sum is 26.

The square root of 142144433 is about 11922.4340216249. The cubic root of 142144433 is about 521.8871677658.

Adding to 142144433 its reverse (334441241), we get a palindrome (476585674).

It can be divided in two parts, 1421 and 44433, that added together give a palindrome (45854).

The spelling of 142144433 in words is "one hundred forty-two million, one hundred forty-four thousand, four hundred thirty-three".