40123841 has 2 divisors, whose sum is σ = 40123842. Its totient is φ = 40123840.

The previous prime is 40123829. The next prime is 40123847. The reversal of 40123841 is 14832104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40056241 + 67600 = 6329^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 40123841 - 2¹⁸ = 39861697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40123847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061920 + 20061921.

It is an arithmetic number, because the mean of its divisors is an integer number (20061921).

Almost surely, 2^40123841 is an apocalyptic number.

It is an amenable number.

40123841 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123841 is an equidigital number, since it uses as much as digits as its factorization.

40123841 is an evil number, because the sum of its binary digits is even.

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

The square root of 40123841 is about 6334.3382448366. The cubic root of 40123841 is about 342.3477676069.

Adding to 40123841 its reverse (14832104), we get a palindrome (54955945).

It can be divided in two parts, 401 and 23841, that added together give a palindrome (24242).

The spelling of 40123841 in words is "forty million, one hundred twenty-three thousand, eight hundred forty-one".