106642099 has 4 divisors (see below), whose sum is σ = 111278736. Its totient is φ = 102005464.

The previous prime is 106642097. The next prime is 106642141. The reversal of 106642099 is 990246601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990246601 = 449 ⋅2205449.

It is a cyclic number.

It is not a de Polignac number, because 106642099 - 2¹ = 106642097 is a prime.

It is a super-2 number, since 2×106642099² = 22745074558251602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106642097) 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, 2318284 + ... + 2318329.

It is an arithmetic number, because the mean of its divisors is an integer number (27819684).

Almost surely, 2^106642099 is an apocalyptic number.

106642099 is a deficient number, since it is larger than the sum of its proper divisors (4636637).

106642099 is an equidigital number, since it uses as much as digits as its factorization.

106642099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636636.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 106642099 is about 10326.7661443455. The cubic root of 106642099 is about 474.2160275658.

The spelling of 106642099 in words is "one hundred six million, six hundred forty-two thousand, ninety-nine".