100452421 has 8 divisors (see below), whose sum is σ = 102308184. Its totient is φ = 98603520.

The previous prime is 100452409. The next prime is 100452427. The reversal of 100452421 is 124254001.

It can be written as a sum of positive squares in 4 ways, for example, as 172225 + 100280196 = 415^2 + 10014^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100452421 - 2⁵ = 100452389 is a prime.

It is a super-2 number, since 2×100452421² = 20181377769522482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100452427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34785 + ... + 37561.

It is an arithmetic number, because the mean of its divisors is an integer number (12788523).

Almost surely, 2^100452421 is an apocalyptic number.

It is an amenable number.

100452421 is a deficient number, since it is larger than the sum of its proper divisors (1855763).

100452421 is an equidigital number, since it uses as much as digits as its factorization.

100452421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 100452421 is about 10022.5955221190. The cubic root of 100452421 is about 464.8578144688.

The spelling of 100452421 in words is "one hundred million, four hundred fifty-two thousand, four hundred twenty-one".