109042605 has 48 divisors (see below), whose sum is σ = 224025984. Its totient is φ = 49844160.

The previous prime is 109042603. The next prime is 109042613. The reversal of 109042605 is 506240901.

109042605 is a `hidden beast` number, since 10 + 9 + 0 + 42 + 605 = 666.

It is not a de Polignac number, because 109042605 - 2¹ = 109042603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109042601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2095 + ... + 14915.

It is an arithmetic number, because the mean of its divisors is an integer number (4667208).

Almost surely, 2^109042605 is an apocalyptic number.

109042605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109042605 is an abundant number, since it is smaller than the sum of its proper divisors (114983379).

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

109042605 is an equidigital number, since it uses as much as digits as its factorization.

109042605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12848 (or 12836 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 109042605 is about 10442.3467190091. The cubic root of 109042605 is about 477.7478479038.

The spelling of 109042605 in words is "one hundred nine million, forty-two thousand, six hundred five".