40071171 has 24 divisors (see below), whose sum is σ = 65426880. Its totient is φ = 21691152.

The previous prime is 40071169. The next prime is 40071181. The reversal of 40071171 is 17117004.

It is not a de Polignac number, because 40071171 - 2¹ = 40071169 is a prime.

It is a super-2 number, since 2×40071171² = 3211397490622482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40071121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4381 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (2726120).

Almost surely, 2^40071171 is an apocalyptic number.

40071171 is a deficient number, since it is larger than the sum of its proper divisors (25355709).

40071171 is a wasteful number, since it uses less digits than its factorization.

40071171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14383 (or 14376 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 40071171 is about 6330.1793813446. The cubic root of 40071171 is about 342.1979036515.

Adding to 40071171 its reverse (17117004), we get a palindrome (57188175).

The spelling of 40071171 in words is "forty million, seventy-one thousand, one hundred seventy-one".