2421942291686 has 8 divisors (see below), whose sum is σ = 3632927412240. Its totient is φ = 1210966487608.

The previous prime is 2421942291649. The next prime is 2421942291737. The reversal of 2421942291686 is 6861922491242.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1638221 + ... + 2743656.

It is an arithmetic number, because the mean of its divisors is an integer number (454115926530).

Almost surely, 2^{2421942291686} is an apocalyptic number.

2421942291686 is a deficient number, since it is larger than the sum of its proper divisors (1210985120554).

2421942291686 is a wasteful number, since it uses less digits than its factorization.

2421942291686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4658238.

The product of its digits is 5971968, while the sum is 56.

The spelling of 2421942291686 in words is "two trillion, four hundred twenty-one billion, nine hundred forty-two million, two hundred ninety-one thousand, six hundred eighty-six".