142444105 has 16 divisors (see below), whose sum is σ = 183544704. Its totient is φ = 105736960.

The previous prime is 142444103. The next prime is 142444123. The reversal of 142444105 is 501444241.

It is not a de Polignac number, because 142444105 - 2¹ = 142444103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142444105.

It is not an unprimeable number, because it can be changed into a prime (142444103) 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 15 ways as a sum of consecutive naturals, for example, 5767 + ... + 17836.

It is an arithmetic number, because the mean of its divisors is an integer number (11471544).

Almost surely, 2^142444105 is an apocalyptic number.

It is an amenable number.

142444105 is a deficient number, since it is larger than the sum of its proper divisors (41100599).

142444105 is a wasteful number, since it uses less digits than its factorization.

142444105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23696.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 142444105 is about 11934.9949727681. The cubic root of 142444105 is about 522.2536616469.

Adding to 142444105 its reverse (501444241), we get a palindrome (643888346).

The spelling of 142444105 in words is "one hundred forty-two million, four hundred forty-four thousand, one hundred five".