12921838742 has 8 divisors (see below), whose sum is σ = 19700508432. Its totient is φ = 6355002600.

The previous prime is 12921838729. The next prime is 12921838751. The reversal of 12921838742 is 24783812921.

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, 52958234 + ... + 52958477.

It is an arithmetic number, because the mean of its divisors is an integer number (2462563554).

Almost surely, 2^12921838742 is an apocalyptic number.

12921838742 is a deficient number, since it is larger than the sum of its proper divisors (6778669690).

12921838742 is a wasteful number, since it uses less digits than its factorization.

12921838742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105916774.

The product of its digits is 387072, while the sum is 47.

The spelling of 12921838742 in words is "twelve billion, nine hundred twenty-one million, eight hundred thirty-eight thousand, seven hundred forty-two".