100123378 has 4 divisors (see below), whose sum is σ = 150185070. Its totient is φ = 50061688.

The previous prime is 100123363. The next prime is 100123403. The reversal of 100123378 is 873321001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873321001 = 7 ⋅124760143.

It can be written as a sum of positive squares in only one way, i.e., 56655729 + 43467649 = 7527^2 + 6593^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25030843 + ... + 25030846.

Almost surely, 2^100123378 is an apocalyptic number.

100123378 is a deficient number, since it is larger than the sum of its proper divisors (50061692).

100123378 is an equidigital number, since it uses as much as digits as its factorization.

100123378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50061691.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 100123378 is about 10006.1669984065. The cubic root of 100123378 is about 464.3496948920.

Adding to 100123378 its reverse (873321001), we get a palindrome (973444379).

The spelling of 100123378 in words is "one hundred million, one hundred twenty-three thousand, three hundred seventy-eight".