142105441 has 4 divisors (see below), whose sum is σ = 142435584. Its totient is φ = 141775300.

The previous prime is 142105433. The next prime is 142105451. The reversal of 142105441 is 144501241.

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 not a de Polignac number, because 142105441 - 2³ = 142105433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142105421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164425 + ... + 165286.

It is an arithmetic number, because the mean of its divisors is an integer number (35608896).

Almost surely, 2^142105441 is an apocalyptic number.

It is an amenable number.

142105441 is a deficient number, since it is larger than the sum of its proper divisors (330143).

142105441 is an equidigital number, since it uses as much as digits as its factorization.

142105441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330142.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 142105441 is about 11920.7986729078. The cubic root of 142105441 is about 521.8394433375.

Adding to 142105441 its reverse (144501241), we get a palindrome (286606682).

The spelling of 142105441 in words is "one hundred forty-two million, one hundred five thousand, four hundred forty-one".