109197742 has 4 divisors (see below), whose sum is σ = 163796616. Its totient is φ = 54598870.

The previous prime is 109197713. The next prime is 109197761. The reversal of 109197742 is 247791901.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 109197695 and 109197704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27299434 + ... + 27299437.

It is an arithmetic number, because the mean of its divisors is an integer number (40949154).

Almost surely, 2^109197742 is an apocalyptic number.

109197742 is a deficient number, since it is larger than the sum of its proper divisors (54598874).

109197742 is an equidigital number, since it uses as much as digits as its factorization.

109197742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54598873.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 109197742 is about 10449.7723420178. The cubic root of 109197742 is about 477.9743075422.

The spelling of 109197742 in words is "one hundred nine million, one hundred ninety-seven thousand, seven hundred forty-two".