1544242135542 has 8 divisors (see below), whose sum is σ = 3088484271096. Its totient is φ = 514747378512.

The previous prime is 1544242135523. The next prime is 1544242135573. The reversal of 1544242135542 is 2455312424451.

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

1544242135542 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1544242135494 and 1544242135503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128686844623 + ... + 128686844634.

It is an arithmetic number, because the mean of its divisors is an integer number (386060533887).

Almost surely, 2^{1544242135542} is an apocalyptic number.

1544242135542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1544242135542 is a wasteful number, since it uses less digits than its factorization.

1544242135542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257373689262.

The product of its digits is 768000, while the sum is 42.

Adding to 1544242135542 its reverse (2455312424451), we get a palindrome (3999554559993).

The spelling of 1544242135542 in words is "one trillion, five hundred forty-four billion, two hundred forty-two million, one hundred thirty-five thousand, five hundred forty-two".