142441331 has 4 divisors (see below), whose sum is σ = 142559592. Its totient is φ = 142323072.

The previous prime is 142441319. The next prime is 142441333. The reversal of 142441331 is 133144241.

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 142441331 - 2¹⁸ = 142179187 is a prime.

It is a super-2 number, since 2×142441331² = 40579065554103122, 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 = 142441297 and 142441306.

It is not an unprimeable number, because it can be changed into a prime (142441333) 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, 57305 + ... + 59738.

It is an arithmetic number, because the mean of its divisors is an integer number (35639898).

Almost surely, 2^142441331 is an apocalyptic number.

142441331 is a deficient number, since it is larger than the sum of its proper divisors (118261).

142441331 is a wasteful number, since it uses less digits than its factorization.

142441331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118260.

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

The square root of 142441331 is about 11934.8787593339. The cubic root of 142441331 is about 522.2502714492.

Adding to 142441331 its reverse (133144241), we get a palindrome (275585572).

The spelling of 142441331 in words is "one hundred forty-two million, four hundred forty-one thousand, three hundred thirty-one".