40121271 has 16 divisors (see below), whose sum is σ = 59557120. Its totient is φ = 26694360.

The previous prime is 40121261. The next prime is 40121303. The reversal of 40121271 is 17212104.

It is not a de Polignac number, because 40121271 - 2¹⁷ = 39990199 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 (40121231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16206 + ... + 18516.

It is an arithmetic number, because the mean of its divisors is an integer number (3722320).

Almost surely, 2^40121271 is an apocalyptic number.

40121271 is a deficient number, since it is larger than the sum of its proper divisors (19435849).

40121271 is a wasteful number, since it uses less digits than its factorization.

40121271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963 (or 2957 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 40121271 is about 6334.1353790395. The cubic root of 40121271 is about 342.3404581327.

Adding to 40121271 its reverse (17212104), we get a palindrome (57333375).

The spelling of 40121271 in words is "forty million, one hundred twenty-one thousand, two hundred seventy-one".