142321162506541 has 4 divisors (see below), whose sum is σ = 147228788799900. Its totient is φ = 137413536213184.

The previous prime is 142321162506443. The next prime is 142321162506547. The reversal of 142321162506541 is 145605261123241.

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 46904486229225 + 95416676277316 = 6848685^2 + 9768146^2 .

It is a cyclic number.

It is not a de Polignac number, because 142321162506541 - 2³⁹ = 141771406692653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321162506547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2453813146636 + ... + 2453813146693.

It is an arithmetic number, because the mean of its divisors is an integer number (36807197199975).

Almost surely, 2^{142321162506541} is an apocalyptic number.

It is an amenable number.

142321162506541 is a deficient number, since it is larger than the sum of its proper divisors (4907626293359).

142321162506541 is an equidigital number, since it uses as much as digits as its factorization.

142321162506541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907626293358.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 142321162506541 in words is "one hundred forty-two trillion, three hundred twenty-one billion, one hundred sixty-two million, five hundred six thousand, five hundred forty-one".