123545551343442 has 32 divisors (see below), whose sum is σ = 248980887460800. Its totient is φ = 40866895392960.

The previous prime is 123545551343441. The next prime is 123545551343453. The reversal of 123545551343442 is 244343155545321.

123545551343442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (123545551343441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55139088 + ... + 57335940.

It is an arithmetic number, because the mean of its divisors is an integer number (7780652733150).

Almost surely, 2^{123545551343442} is an apocalyptic number.

123545551343442 is an abundant number, since it is smaller than the sum of its proper divisors (125435336117358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123545551343442 is a wasteful number, since it uses less digits than its factorization.

123545551343442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268538.

The product of its digits is 17280000, while the sum is 51.

The spelling of 123545551343442 in words is "one hundred twenty-three trillion, five hundred forty-five billion, five hundred fifty-one million, three hundred forty-three thousand, four hundred forty-two".