109805742 has 12 divisors (see below), whose sum is σ = 237912480. Its totient is φ = 36601908.

The previous prime is 109805711. The next prime is 109805743. The reversal of 109805742 is 247508901.

109805742 is a `hidden beast` number, since 1 + 0 + 9 + 80 + 574 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 109805697 and 109805706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109805743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3050142 + ... + 3050177.

It is an arithmetic number, because the mean of its divisors is an integer number (19826040).

Almost surely, 2^109805742 is an apocalyptic number.

109805742 is an abundant number, since it is smaller than the sum of its proper divisors (128106738).

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

109805742 is a wasteful number, since it uses less digits than its factorization.

109805742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100327 (or 6100324 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 109805742 is about 10478.8235026648. The cubic root of 109805742 is about 478.8597674986.

The spelling of 109805742 in words is "one hundred nine million, eight hundred five thousand, seven hundred forty-two".