105726680421 has 8 divisors (see below), whose sum is σ = 141058190880. Its totient is φ = 70439811792.

The previous prime is 105726680407. The next prime is 105726680453. The reversal of 105726680421 is 124086627501.

It is a happy number.

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

It is not a de Polignac number, because 105726680421 - 2¹³ = 105726672229 is a prime.

It is a super-2 number, since 2×105726680421² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105726680461) 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, 11154930 + ... + 11164403.

It is an arithmetic number, because the mean of its divisors is an integer number (17632273860).

Almost surely, 2^105726680421 is an apocalyptic number.

It is an amenable number.

105726680421 is a deficient number, since it is larger than the sum of its proper divisors (35331510459).

105726680421 is a wasteful number, since it uses less digits than its factorization.

105726680421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22320915.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 105726680421 in words is "one hundred five billion, seven hundred twenty-six million, six hundred eighty thousand, four hundred twenty-one".