154242121215540 has 96 divisors (see below), whose sum is σ = 450259756442496. Its totient is φ = 39416678945280.

The previous prime is 154242121215517. The next prime is 154242121215599. The reversal of 154242121215540 is 45512121242451.

154242121215540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 563861071 + ... + 564134550.

It is an arithmetic number, because the mean of its divisors is an integer number (4690205796276).

Almost surely, 2^{154242121215540} is an apocalyptic number.

154242121215540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154242121215540 is an abundant number, since it is smaller than the sum of its proper divisors (296017635226956).

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

154242121215540 is a wasteful number, since it uses less digits than its factorization.

154242121215540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127995729 (or 1127995727 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 39.

Adding to 154242121215540 its reverse (45512121242451), we get a palindrome (199754242457991).

The spelling of 154242121215540 in words is "one hundred fifty-four trillion, two hundred forty-two billion, one hundred twenty-one million, two hundred fifteen thousand, five hundred forty".