106661426 has 4 divisors (see below), whose sum is σ = 159992142. Its totient is φ = 53330712.

The previous prime is 106661381. The next prime is 106661431. The reversal of 106661426 is 624166601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624166601 = 421 ⋅1482581.

It can be written as a sum of positive squares in only one way, i.e., 83631025 + 23030401 = 9145^2 + 4799^2 .

It is a super-2 number, since 2×106661426² = 22753319592706952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106661392 and 106661401.

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, 26665355 + ... + 26665358.

Almost surely, 2^106661426 is an apocalyptic number.

106661426 is a deficient number, since it is larger than the sum of its proper divisors (53330716).

106661426 is an equidigital number, since it uses as much as digits as its factorization.

106661426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53330715.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 106661426 is about 10327.7018740860. The cubic root of 106661426 is about 474.2446735997.

The spelling of 106661426 in words is "one hundred six million, six hundred sixty-one thousand, four hundred twenty-six".