40212371 has 2 divisors, whose sum is σ = 40212372. Its totient is φ = 40212370.

The previous prime is 40212329. The next prime is 40212373. The reversal of 40212371 is 17321204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40212371 - 2²² = 36018067 is a prime.

Together with 40212373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40212373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20106185 + 20106186.

It is an arithmetic number, because the mean of its divisors is an integer number (20106186).

Almost surely, 2^40212371 is an apocalyptic number.

40212371 is a deficient number, since it is larger than the sum of its proper divisors (1).

40212371 is an equidigital number, since it uses as much as digits as its factorization.

40212371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 40212371 is about 6341.3224961360. The cubic root of 40212371 is about 342.5993701758.

Adding to 40212371 its reverse (17321204), we get a palindrome (57533575).

The spelling of 40212371 in words is "forty million, two hundred twelve thousand, three hundred seventy-one".