100454 has 4 divisors (see below), whose sum is σ = 150684. Its totient is φ = 50226.

The previous prime is 100447. The next prime is 100459. The reversal of 100454 is 454001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454001 = 107 ⋅4243.

It is a super-2 number, since 2×100454² = 20182012232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100459) by changing a digit.

100454 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25112 + ... + 25115.

It is an arithmetic number, because the mean of its divisors is an integer number (37671).

2¹⁰⁰⁴⁵⁴ is an apocalyptic number.

100454 is a deficient number, since it is larger than the sum of its proper divisors (50230).

100454 is an equidigital number, since it uses as much as digits as its factorization.

100454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50229.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 100454 is about 316.9447901449. The cubic root of 100454 is about 46.4860250138.

Adding to 100454 its reverse (454001), we get a palindrome (554455).

The spelling of 100454 in words is "one hundred thousand, four hundred fifty-four".