40410421 has 2 divisors, whose sum is σ = 40410422. Its totient is φ = 40410420.

The previous prime is 40410367. The next prime is 40410437. The reversal of 40410421 is 12401404.

40410421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (40410437) can be obtained adding 40410421 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39062500 + 1347921 = 6250^2 + 1161^2 .

It is a cyclic number.

It is not a de Polignac number, because 40410421 - 2²¹ = 38313269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40410395 and 40410404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40410481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20205210 + 20205211.

It is an arithmetic number, because the mean of its divisors is an integer number (20205211).

Almost surely, 2^40410421 is an apocalyptic number.

It is an amenable number.

40410421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40410421 is an equidigital number, since it uses as much as digits as its factorization.

40410421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40410421 is about 6356.9191437362. The cubic root of 40410421 is about 343.1608948594.

Adding to 40410421 its reverse (12401404), we get a palindrome (52811825).

The spelling of 40410421 in words is "forty million, four hundred ten thousand, four hundred twenty-one".