40124191 has 2 divisors, whose sum is σ = 40124192. Its totient is φ = 40124190.

The previous prime is 40124129. The next prime is 40124207. The reversal of 40124191 is 19142104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40124191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40194191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20062095 + 20062096.

It is an arithmetic number, because the mean of its divisors is an integer number (20062096).

Almost surely, 2^40124191 is an apocalyptic number.

40124191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40124191 is an equidigital number, since it uses as much as digits as its factorization.

40124191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 40124191 is about 6334.3658719717. The cubic root of 40124191 is about 342.3487630365.

Adding to 40124191 its reverse (19142104), we get a palindrome (59266295).

The spelling of 40124191 in words is "forty million, one hundred twenty-four thousand, one hundred ninety-one".