142144331 has 8 divisors (see below), whose sum is σ = 167691264. Its totient is φ = 117907560.

The previous prime is 142144297. The next prime is 142144333. The reversal of 142144331 is 133441241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142144331 is a prime.

It is a super-2 number, since 2×142144331² = 40410021670875122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142144297 and 142144306.

It is not an unprimeable number, because it can be changed into a prime (142144333) 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, 327305 + ... + 327738.

It is an arithmetic number, because the mean of its divisors is an integer number (20961408).

Almost surely, 2^142144331 is an apocalyptic number.

142144331 is a deficient number, since it is larger than the sum of its proper divisors (25546933).

142144331 is an equidigital number, since it uses as much as digits as its factorization.

142144331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655081.

The product of its digits is 1152, while the sum is 23.

The square root of 142144331 is about 11922.4297439742. The cubic root of 142144331 is about 521.8870429339.

Adding to 142144331 its reverse (133441241), we get a palindrome (275585572).

The spelling of 142144331 in words is "one hundred forty-two million, one hundred forty-four thousand, three hundred thirty-one".