106726139 has 4 divisors (see below), whose sum is σ = 114935856. Its totient is φ = 98516424.

The previous prime is 106726133. The next prime is 106726163. The reversal of 106726139 is 931627601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106726139 - 2¹² = 106722043 is a prime.

It is a super-3 number, since 3×106726139³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106726099 and 106726108.

It is not an unprimeable number, because it can be changed into a prime (106726133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4104839 + ... + 4104864.

It is an arithmetic number, because the mean of its divisors is an integer number (28733964).

Almost surely, 2^106726139 is an apocalyptic number.

106726139 is a deficient number, since it is larger than the sum of its proper divisors (8209717).

106726139 is an equidigital number, since it uses as much as digits as its factorization.

106726139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8209716.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 106726139 is about 10330.8343806297. The cubic root of 106726139 is about 474.3405645329.

The spelling of 106726139 in words is "one hundred six million, seven hundred twenty-six thousand, one hundred thirty-nine".