100040001 has 4 divisors (see below), whose sum is σ = 133386672. Its totient is φ = 66693332.

The previous prime is 100039981. The next prime is 100040011.

100040001 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100040001 - 2⁵ = 100039969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100040011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16673331 + ... + 16673336.

It is an arithmetic number, because the mean of its divisors is an integer number (33346668).

Almost surely, 2^100040001 is an apocalyptic number.

It is an amenable number.

100040001 is a deficient number, since it is larger than the sum of its proper divisors (33346671).

100040001 is an equidigital number, since it uses as much as digits as its factorization.

100040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33346670.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 100040001 is about 10001.9998500300. Note that the first 3 decimals coincide. The cubic root of 100040001 is about 464.2207645093.

The spelling of 100040001 in words is "one hundred million, forty thousand, one".