40026005 has 8 divisors (see below), whose sum is σ = 48184632. Its totient is φ = 31918528.

The previous prime is 40025981. The next prime is 40026017. The reversal of 40026005 is 50062004.

It can be written as a sum of positive squares in 4 ways, for example, as 4301476 + 35724529 = 2074^2 + 5977^2 .

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 40026005 - 2⁶ = 40025941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11042 + ... + 14211.

It is an arithmetic number, because the mean of its divisors is an integer number (6023079).

Almost surely, 2^40026005 is an apocalyptic number.

It is an amenable number.

40026005 is a deficient number, since it is larger than the sum of its proper divisors (8158627).

40026005 is a wasteful number, since it uses less digits than its factorization.

40026005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25575.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40026005 is about 6326.6108620651. The cubic root of 40026005 is about 342.0692864877.

Adding to 40026005 its reverse (50062004), we get a palindrome (90088009).

The spelling of 40026005 in words is "forty million, twenty-six thousand, five".