106066138 has 4 divisors (see below), whose sum is σ = 159099210. Its totient is φ = 53033068.

The previous prime is 106066123. The next prime is 106066171. The reversal of 106066138 is 831660601.

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

It can be written as a sum of positive squares in only one way, i.e., 92794689 + 13271449 = 9633^2 + 3643^2 .

It is a super-2 number, since 2×106066138² = 22500051260470088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26516533 + ... + 26516536.

Almost surely, 2^106066138 is an apocalyptic number.

106066138 is a deficient number, since it is larger than the sum of its proper divisors (53033072).

106066138 is an equidigital number, since it uses as much as digits as its factorization.

106066138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53033071.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 106066138 is about 10298.8415853435. The cubic root of 106066138 is about 473.3607582911.

The spelling of 106066138 in words is "one hundred six million, sixty-six thousand, one hundred thirty-eight".