142440441 has 32 divisors (see below), whose sum is σ = 223899648. Its totient is φ = 79410240.

The previous prime is 142440427. The next prime is 142440481. The reversal of 142440441 is 144044241.

It is a happy number.

It is not a de Polignac number, because 142440441 - 2¹⁰ = 142439417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142440421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234360 + ... + 234966.

It is an arithmetic number, because the mean of its divisors is an integer number (6996864).

Almost surely, 2^142440441 is an apocalyptic number.

142440441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142440441 is a deficient number, since it is larger than the sum of its proper divisors (81459207).

142440441 is a wasteful number, since it uses less digits than its factorization.

142440441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 142440441 is about 11934.8414736016. The cubic root of 142440441 is about 522.2491837412.

Adding to 142440441 its reverse (144044241), we get a palindrome (286484682).

The spelling of 142440441 in words is "one hundred forty-two million, four hundred forty thousand, four hundred forty-one".