142261260266605 has 4 divisors (see below), whose sum is σ = 170713512319932. Its totient is φ = 113809008213280.

The previous prime is 142261260266597. The next prime is 142261260266641. The reversal of 142261260266605 is 506662062162241.

It is a happy number.

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 23247190113156 + 119014070153449 = 4821534^2 + 10909357^2 .

It is not a de Polignac number, because 142261260266605 - 2³ = 142261260266597 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 a congruent 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, 14226126026656 + ... + 14226126026665.

It is an arithmetic number, because the mean of its divisors is an integer number (42678378079983).

Almost surely, 2^{142261260266605} is an apocalyptic number.

It is an amenable number.

142261260266605 is a deficient number, since it is larger than the sum of its proper divisors (28452252053327).

142261260266605 is an equidigital number, since it uses as much as digits as its factorization.

142261260266605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28452252053326.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 142261260266605 in words is "one hundred forty-two trillion, two hundred sixty-one billion, two hundred sixty million, two hundred sixty-six thousand, six hundred five".