40341421 has 2 divisors, whose sum is σ = 40341422. Its totient is φ = 40341420.

The previous prime is 40341383. The next prime is 40341481. The reversal of 40341421 is 12414304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33524100 + 6817321 = 5790^2 + 2611^2 .

It is a cyclic number.

It is not a de Polignac number, because 40341421 - 2⁷ = 40341293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40341481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170710 + 20170711.

It is an arithmetic number, because the mean of its divisors is an integer number (20170711).

Almost surely, 2^40341421 is an apocalyptic number.

It is an amenable number.

40341421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40341421 is an equidigital number, since it uses as much as digits as its factorization.

40341421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40341421 is about 6351.4896677866. The cubic root of 40341421 is about 342.9654700937.

Adding to 40341421 its reverse (12414304), we get a palindrome (52755725).

The spelling of 40341421 in words is "forty million, three hundred forty-one thousand, four hundred twenty-one".