108720842 has 8 divisors (see below), whose sum is σ = 163125732. Its totient is φ = 54345600.

The previous prime is 108720817. The next prime is 108720847. The reversal of 108720842 is 248027801.

It can be written as a sum of positive squares in 2 ways, for example, as 104264521 + 4456321 = 10211^2 + 2111^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 108720799 and 108720808.

It is not an unprimeable number, because it can be changed into a prime (108720847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9242 + ... + 17402.

Almost surely, 2^108720842 is an apocalyptic number.

108720842 is a deficient number, since it is larger than the sum of its proper divisors (54404890).

108720842 is an equidigital number, since it uses as much as digits as its factorization.

108720842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14824.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 108720842 is about 10426.9286944910. The cubic root of 108720842 is about 477.2774720364.

The spelling of 108720842 in words is "one hundred eight million, seven hundred twenty thousand, eight hundred forty-two".