109742109 has 8 divisors (see below), whose sum is σ = 146384832. Its totient is φ = 73130400.

The previous prime is 109742107. The next prime is 109742147. The reversal of 109742109 is 901247901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109742109 - 2¹ = 109742107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109742109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109742107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2409 + ... + 15009.

It is an arithmetic number, because the mean of its divisors is an integer number (18298104).

Almost surely, 2^109742109 is an apocalyptic number.

It is an amenable number.

109742109 is a deficient number, since it is larger than the sum of its proper divisors (36642723).

109742109 is a wasteful number, since it uses less digits than its factorization.

109742109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15507.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 109742109 is about 10475.7867962268. The cubic root of 109742109 is about 478.7672490473.

The spelling of 109742109 in words is "one hundred nine million, seven hundred forty-two thousand, one hundred nine".