126105021678 has 8 divisors (see below), whose sum is σ = 252210043368. Its totient is φ = 42035007224.

The previous prime is 126105021629. The next prime is 126105021683. The reversal of 126105021678 is 876120501621.

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

126105021678 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10508751801 + ... + 10508751812.

It is an arithmetic number, because the mean of its divisors is an integer number (31526255421).

Almost surely, 2^126105021678 is an apocalyptic number.

126105021678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126105021678 is a wasteful number, since it uses less digits than its factorization.

126105021678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21017503618.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 126105021678 in words is "one hundred twenty-six billion, one hundred five million, twenty-one thousand, six hundred seventy-eight".