142266477505 has 4 divisors (see below), whose sum is σ = 170719773012. Its totient is φ = 113813182000.

The previous prime is 142266477499. The next prime is 142266477527. The reversal of 142266477505 is 505774662241.

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 67265534736 + 75000942769 = 259356^2 + 273863^2 .

It is not a de Polignac number, because 142266477505 - 2³ = 142266477497 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 14226647746 + ... + 14226647755.

It is an arithmetic number, because the mean of its divisors is an integer number (42679943253).

Almost surely, 2^142266477505 is an apocalyptic number.

It is an amenable number.

142266477505 is a deficient number, since it is larger than the sum of its proper divisors (28453295507).

142266477505 is an equidigital number, since it uses as much as digits as its factorization.

142266477505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28453295506.

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 142266477505 in words is "one hundred forty-two billion, two hundred sixty-six million, four hundred seventy-seven thousand, five hundred five".