40002571 has 12 divisors (see below), whose sum is σ = 48139920. Its totient is φ = 33104400.

The previous prime is 40002569. The next prime is 40002577. The reversal of 40002571 is 17520004.

It is not a de Polignac number, because 40002571 - 2¹ = 40002569 is a prime.

It is a super-2 number, since 2×40002571² = 3200411373220082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40002577) 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, 12655 + ... + 15496.

It is an arithmetic number, because the mean of its divisors is an integer number (4011660).

Almost surely, 2^40002571 is an apocalyptic number.

40002571 is a deficient number, since it is larger than the sum of its proper divisors (8137349).

40002571 is a wasteful number, since it uses less digits than its factorization.

40002571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28194 (or 28187 counting only the distinct ones).

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

The square root of 40002571 is about 6324.7585724674. The cubic root of 40002571 is about 342.0025164253.

Adding to 40002571 its reverse (17520004), we get a palindrome (57522575).

The spelling of 40002571 in words is "forty million, two thousand, five hundred seventy-one".