123544153425442 has 8 divisors (see below), whose sum is σ = 185316787991232. Its totient is φ = 61771890761700.

The previous prime is 123544153425419. The next prime is 123544153425449. The reversal of 123544153425442 is 244524351445321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (123544153425449) 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, 92143534 + ... + 93474697.

It is an arithmetic number, because the mean of its divisors is an integer number (23164598498904).

Almost surely, 2^{123544153425442} is an apocalyptic number.

123544153425442 is a deficient number, since it is larger than the sum of its proper divisors (61772634565790).

123544153425442 is a wasteful number, since it uses less digits than its factorization.

123544153425442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185951024.

The product of its digits is 9216000, while the sum is 49.

The spelling of 123544153425442 in words is "one hundred twenty-three trillion, five hundred forty-four billion, one hundred fifty-three million, four hundred twenty-five thousand, four hundred forty-two".