142441441 has 4 divisors (see below), whose sum is σ = 143164692. Its totient is φ = 141718192.

The previous prime is 142441427. The next prime is 142441447. The reversal of 142441441 is 144144241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 114404416 + 28037025 = 10696^2 + 5295^2 .

It is a cyclic number.

It is not a de Polignac number, because 142441441 - 2²¹ = 140344289 is a prime.

It is a super-2 number, since 2×142441441² = 40579128228312962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142441447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361330 + ... + 361723.

It is an arithmetic number, because the mean of its divisors is an integer number (35791173).

Almost surely, 2^142441441 is an apocalyptic number.

It is an amenable number.

142441441 is a deficient number, since it is larger than the sum of its proper divisors (723251).

142441441 is an equidigital number, since it uses as much as digits as its factorization.

142441441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723250.

The product of its digits is 2048, while the sum is 25.

The square root of 142441441 is about 11934.8833676748. The cubic root of 142441441 is about 522.2504058847.

Adding to 142441441 its reverse (144144241), we get a palindrome (286585682).

The spelling of 142441441 in words is "one hundred forty-two million, four hundred forty-one thousand, four hundred forty-one".