108403138 has 8 divisors (see below), whose sum is σ = 162744588. Its totient is φ = 54154944.

The previous prime is 108403121. The next prime is 108403153. The reversal of 108403138 is 831304801.

It can be written as a sum of positive squares in 2 ways, for example, as 94809169 + 13593969 = 9737^2 + 3687^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 20331 + ... + 25102.

Almost surely, 2^108403138 is an apocalyptic number.

108403138 is a deficient number, since it is larger than the sum of its proper divisors (54341450).

108403138 is a wasteful number, since it uses less digits than its factorization.

108403138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46628.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 108403138 is about 10411.6827650481. The cubic root of 108403138 is about 476.8121184451.

Adding to 108403138 its reverse (831304801), we get a palindrome (939707939).

The spelling of 108403138 in words is "one hundred eight million, four hundred three thousand, one hundred thirty-eight".