2421942291687 has 8 divisors (see below), whose sum is σ = 3369658840704. Its totient is φ = 1544426968568.

The previous prime is 2421942291649. The next prime is 2421942291737. The reversal of 2421942291687 is 7861922491242.

2421942291687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2421942291687 - 2¹⁸ = 2421942029543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421942291617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17550306393 + ... + 17550306530.

It is an arithmetic number, because the mean of its divisors is an integer number (421207355088).

Almost surely, 2^{2421942291687} is an apocalyptic number.

2421942291687 is a deficient number, since it is larger than the sum of its proper divisors (947716549017).

2421942291687 is a wasteful number, since it uses less digits than its factorization.

2421942291687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35100612949.

The product of its digits is 6967296, while the sum is 57.

The spelling of 2421942291687 in words is "two trillion, four hundred twenty-one billion, nine hundred forty-two million, two hundred ninety-one thousand, six hundred eighty-seven".