142440443105 has 4 divisors (see below), whose sum is σ = 170928531732. Its totient is φ = 113952354480.

The previous prime is 142440443083. The next prime is 142440443147. The reversal of 142440443105 is 501344044241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501344044241 = 233 ⋅2151691177.

It can be written as a sum of positive squares in 2 ways, for example, as 38903223121 + 103537219984 = 197239^2 + 321772^2 .

It is not a de Polignac number, because 142440443105 - 2⁸ = 142440442849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14244044306 + ... + 14244044315.

It is an arithmetic number, because the mean of its divisors is an integer number (42732132933).

Almost surely, 2^142440443105 is an apocalyptic number.

It is an amenable number.

142440443105 is a deficient number, since it is larger than the sum of its proper divisors (28488088627).

142440443105 is an equidigital number, since it uses as much as digits as its factorization.

142440443105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28488088626.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 142440443105 its reverse (501344044241), we get a palindrome (643784487346).

The spelling of 142440443105 in words is "one hundred forty-two billion, four hundred forty million, four hundred forty-three thousand, one hundred five".