100401001 has 8 divisors (see below), whose sum is σ = 103737920. Its totient is φ = 97109712.

The previous prime is 100400999. The next prime is 100401011. The reversal of 100401001 is 100104001.

It is a happy number.

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 100401001 - 2¹ = 100400999 is a prime.

It is a super-2 number, since 2×100401001² = 20160722003604002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100401011) 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, 6906 + ... + 15763.

It is an arithmetic number, because the mean of its divisors is an integer number (12967240).

Almost surely, 2^100401001 is an apocalyptic number.

It is an amenable number.

100401001 is a deficient number, since it is larger than the sum of its proper divisors (3336919).

100401001 is a wasteful number, since it uses less digits than its factorization.

100401001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22815.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 100401001 is about 10020.0299899751. The cubic root of 100401001 is about 464.7784831520.

Adding to 100401001 its reverse (100104001), we get a palindrome (200505002).

The spelling of 100401001 in words is "one hundred million, four hundred one thousand, one".