145430545545442 has 16 divisors (see below), whose sum is σ = 218228057281080. Its totient is φ = 72687861046528.

The previous prime is 145430545545379. The next prime is 145430545545449. The reversal of 145430545545442 is 244545545034541.

It can be written as a sum of positive squares in 4 ways, for example, as 94879853315641 + 50550692229801 = 9740629^2 + 7109901^2 .

It is not an unprimeable number, because it can be changed into a prime (145430545545449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248734188 + ... + 249318184.

Almost surely, 2^{145430545545442} is an apocalyptic number.

145430545545442 is a deficient number, since it is larger than the sum of its proper divisors (72797511735638).

145430545545442 is a wasteful number, since it uses less digits than its factorization.

145430545545442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630725.

The product of its (nonzero) digits is 76800000, while the sum is 55.

The spelling of 145430545545442 in words is "one hundred forty-five trillion, four hundred thirty billion, five hundred forty-five million, five hundred forty-five thousand, four hundred forty-two".