108908642 has 8 divisors (see below), whose sum is σ = 168632832. Its totient is φ = 52697700.

The previous prime is 108908621. The next prime is 108908671. The reversal of 108908642 is 246809801.

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

It is a super-2 number, since 2×108908642² = 23722184604568328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 108908596 and 108908605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878234 + ... + 878357.

It is an arithmetic number, because the mean of its divisors is an integer number (21079104).

Almost surely, 2^108908642 is an apocalyptic number.

108908642 is a deficient number, since it is larger than the sum of its proper divisors (59724190).

108908642 is a wasteful number, since it uses less digits than its factorization.

108908642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756624.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 108908642 is about 10435.9303370615. The cubic root of 108908642 is about 477.5521239117.

The spelling of 108908642 in words is "one hundred eight million, nine hundred eight thousand, six hundred forty-two".