40158171 has 12 divisors (see below), whose sum is σ = 58138080. Its totient is φ = 26711280.

The previous prime is 40158169. The next prime is 40158179. The reversal of 40158171 is 17185104.

It is not a de Polignac number, because 40158171 - 2¹ = 40158169 is a prime.

It is a super-2 number, since 2×40158171² = 3225357396130482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40158179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 691 + ... + 8988.

It is an arithmetic number, because the mean of its divisors is an integer number (4844840).

Almost surely, 2^40158171 is an apocalyptic number.

40158171 is a deficient number, since it is larger than the sum of its proper divisors (17979909).

40158171 is a wasteful number, since it uses less digits than its factorization.

40158171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10146 (or 10143 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 40158171 is about 6337.0474986385. The cubic root of 40158171 is about 342.4453774756.

The spelling of 40158171 in words is "forty million, one hundred fifty-eight thousand, one hundred seventy-one".