12354241643542 has 4 divisors (see below), whose sum is σ = 18531362465316. Its totient is φ = 6177120821770.

The previous prime is 12354241643539. The next prime is 12354241643587. The reversal of 12354241643542 is 24534614245321.

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

It is a junction number, because it is equal to n+sod(n) for n = 12354241643492 and 12354241643501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3088560410884 + ... + 3088560410887.

It is an arithmetic number, because the mean of its divisors is an integer number (4632840616329).

Almost surely, 2^{12354241643542} is an apocalyptic number.

12354241643542 is a deficient number, since it is larger than the sum of its proper divisors (6177120821774).

12354241643542 is an equidigital number, since it uses as much as digits as its factorization.

12354241643542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6177120821773.

The product of its digits is 2764800, while the sum is 46.

Adding to 12354241643542 its reverse (24534614245321), we get a palindrome (36888855888863).

The spelling of 12354241643542 in words is "twelve trillion, three hundred fifty-four billion, two hundred forty-one million, six hundred forty-three thousand, five hundred forty-two".