40241381 has 2 divisors, whose sum is σ = 40241382. Its totient is φ = 40241380.

The previous prime is 40241351. The next prime is 40241401. The reversal of 40241381 is 18314204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22944100 + 17297281 = 4790^2 + 4159^2 .

It is a cyclic number.

It is not a de Polignac number, because 40241381 - 2¹⁰ = 40240357 is a prime.

It is a super-2 number, since 2×40241381² = 3238737489574322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40241321) 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, 20120690 + 20120691.

It is an arithmetic number, because the mean of its divisors is an integer number (20120691).

Almost surely, 2^40241381 is an apocalyptic number.

It is an amenable number.

40241381 is a deficient number, since it is larger than the sum of its proper divisors (1).

40241381 is an equidigital number, since it uses as much as digits as its factorization.

40241381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 40241381 is about 6343.6094614975. The cubic root of 40241381 is about 342.6817363599.

Adding to 40241381 its reverse (18314204), we get a palindrome (58555585).

The spelling of 40241381 in words is "forty million, two hundred forty-one thousand, three hundred eighty-one".