40100001 has 4 divisors (see below), whose sum is σ = 53466672. Its totient is φ = 26733332.

The previous prime is 40099987. The next prime is 40100003. The reversal of 40100001 is 10000104.

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 40100001 - 2¹⁰ = 40098977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40100003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6683331 + ... + 6683336.

It is an arithmetic number, because the mean of its divisors is an integer number (13366668).

Almost surely, 2^40100001 is an apocalyptic number.

It is an amenable number.

40100001 is a deficient number, since it is larger than the sum of its proper divisors (13366671).

40100001 is a wasteful number, since it uses less digits than its factorization.

40100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13366670.

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

The square root of 40100001 is about 6332.4561585533. The cubic root of 40100001 is about 342.2799510043.

Adding to 40100001 its reverse (10000104), we get a palindrome (50100105).

The spelling of 40100001 in words is "forty million, one hundred thousand, one".