120443240154542 has 4 divisors (see below), whose sum is σ = 180664860231816. Its totient is φ = 60221620077270.

The previous prime is 120443240154539. The next prime is 120443240154553. The reversal of 120443240154542 is 245451042344021.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 120443240154542.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30110810038634 + ... + 30110810038637.

It is an arithmetic number, because the mean of its divisors is an integer number (45166215057954).

Almost surely, 2^{120443240154542} is an apocalyptic number.

120443240154542 is a deficient number, since it is larger than the sum of its proper divisors (60221620077274).

120443240154542 is an equidigital number, since it uses as much as digits as its factorization.

120443240154542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60221620077273.

The product of its (nonzero) digits is 614400, while the sum is 41.

Adding to 120443240154542 its reverse (245451042344021), we get a palindrome (365894282498563).

The spelling of 120443240154542 in words is "one hundred twenty trillion, four hundred forty-three billion, two hundred forty million, one hundred fifty-four thousand, five hundred forty-two".