40681071 has 12 divisors (see below), whose sum is σ = 61854520. Its totient is φ = 25693200.

The previous prime is 40681063. The next prime is 40681073. The reversal of 40681071 is 17018604.

It is a happy number.

It is not a de Polignac number, because 40681071 - 2³ = 40681063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40681073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118780 + ... + 119121.

Almost surely, 2^40681071 is an apocalyptic number.

40681071 is a deficient number, since it is larger than the sum of its proper divisors (21173449).

40681071 is a wasteful number, since it uses less digits than its factorization.

40681071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237926 (or 237923 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 40681071 is about 6378.1714464257. The cubic root of 40681071 is about 343.9253009563.

Adding to 40681071 its reverse (17018604), we get a palindrome (57699675).

The spelling of 40681071 in words is "forty million, six hundred eighty-one thousand, seventy-one".