100478 has 8 divisors (see below), whose sum is σ = 172272. Its totient is φ = 43056.

The previous prime is 100469. The next prime is 100483. The reversal of 100478 is 874001.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

100478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3575 + ... + 3602.

It is an arithmetic number, because the mean of its divisors is an integer number (21534).

2¹⁰⁰⁴⁷⁸ is an apocalyptic number.

100478 is a deficient number, since it is larger than the sum of its proper divisors (71794).

100478 is an equidigital number, since it uses as much as digits as its factorization.

100478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 100478 is about 316.9826493674. The cubic root of 100478 is about 46.4897267936.

Adding to 100478 its reverse (874001), we get a palindrome (974479).

The spelling of 100478 in words is "one hundred thousand, four hundred seventy-eight".