109106442 has 48 divisors (see below), whose sum is σ = 252088200. Its totient is φ = 33985536.

The previous prime is 109106423. The next prime is 109106443. The reversal of 109106442 is 244601901.

109106442 is a `hidden beast` number, since 1 + 0 + 9 + 10 + 644 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 54774801 + 54331641 = 7401^2 + 7371^2 .

It is not an unprimeable number, because it can be changed into a prime (109106443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44398 + ... + 46790.

Almost surely, 2^109106442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109106442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126044100).

109106442 is an abundant number, since it is smaller than the sum of its proper divisors (142981758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109106442 is a wasteful number, since it uses less digits than its factorization.

109106442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567 (or 2564 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 109106442 is about 10445.4029122863. The cubic root of 109106442 is about 477.8410592982.

The spelling of 109106442 in words is "one hundred nine million, one hundred six thousand, four hundred forty-two".