40180871 has 2 divisors, whose sum is σ = 40180872. Its totient is φ = 40180870.

The previous prime is 40180859. The next prime is 40180937. The reversal of 40180871 is 17808104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40180871 is a prime.

It is a super-2 number, since 2×40180871² = 3229004788637282, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40180841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20090435 + 20090436.

It is an arithmetic number, because the mean of its divisors is an integer number (20090436).

Almost surely, 2^40180871 is an apocalyptic number.

40180871 is a deficient number, since it is larger than the sum of its proper divisors (1).

40180871 is an equidigital number, since it uses as much as digits as its factorization.

40180871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 40180871 is about 6338.8383005090. The cubic root of 40180871 is about 342.5098894262.

Adding to 40180871 its reverse (17808104), we get a palindrome (57988975).

The spelling of 40180871 in words is "forty million, one hundred eighty thousand, eight hundred seventy-one".