1242437384385 has 24 divisors (see below), whose sum is σ = 2154739601664. Its totient is φ = 662269742880.

The previous prime is 1242437384371. The next prime is 1242437384443. The reversal of 1242437384385 is 5834837342421.

1242437384385 is a `hidden beast` number, since 12 + 4 + 243 + 7 + 3 + 8 + 4 + 385 = 666.

It is not a de Polignac number, because 1242437384385 - 2⁴ = 1242437384369 is a prime.

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 7490571 + ... + 7654640.

It is an arithmetic number, because the mean of its divisors is an integer number (89780816736).

Almost surely, 2^{1242437384385} is an apocalyptic number.

1242437384385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242437384385 is a deficient number, since it is larger than the sum of its proper divisors (912302217279).

1242437384385 is a wasteful number, since it uses less digits than its factorization.

1242437384385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15147045 (or 15147042 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 54.

The spelling of 1242437384385 in words is "one trillion, two hundred forty-two billion, four hundred thirty-seven million, three hundred eighty-four thousand, three hundred eighty-five".