40002371 has 2 divisors, whose sum is σ = 40002372. Its totient is φ = 40002370.

The previous prime is 40002367. The next prime is 40002379. The reversal of 40002371 is 17320004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40002371 - 2² = 40002367 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40002379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20001185 + 20001186.

It is an arithmetic number, because the mean of its divisors is an integer number (20001186).

Almost surely, 2^40002371 is an apocalyptic number.

40002371 is a deficient number, since it is larger than the sum of its proper divisors (1).

40002371 is an equidigital number, since it uses as much as digits as its factorization.

40002371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 40002371 is about 6324.7427615675. The cubic root of 40002371 is about 342.0019464568.

Adding to 40002371 its reverse (17320004), we get a palindrome (57322375).

The spelling of 40002371 in words is "forty million, two thousand, three hundred seventy-one".