40712005 has 4 divisors (see below), whose sum is σ = 48854412. Its totient is φ = 32569600.

The previous prime is 40711997. The next prime is 40712029. The reversal of 40712005 is 50021704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30669444 + 10042561 = 5538^2 + 3169^2 .

It is not a de Polignac number, because 40712005 - 2³ = 40711997 is a prime.

It is a super-2 number, since 2×40712005² = 3314934702240050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 4071196 + ... + 4071205.

It is an arithmetic number, because the mean of its divisors is an integer number (12213603).

Almost surely, 2^40712005 is an apocalyptic number.

It is an amenable number.

40712005 is a deficient number, since it is larger than the sum of its proper divisors (8142407).

40712005 is an equidigital number, since it uses as much as digits as its factorization.

40712005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8142406.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 40712005 is about 6380.5959752989. The cubic root of 40712005 is about 344.0124527897.

Adding to 40712005 its reverse (50021704), we get a palindrome (90733709).

The spelling of 40712005 in words is "forty million, seven hundred twelve thousand, five".