43413240022421 has 2 divisors, whose sum is σ = 43413240022422. Its totient is φ = 43413240022420.

The previous prime is 43413240022367. The next prime is 43413240022487. The reversal of 43413240022421 is 12422004231434.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42752165328196 + 661074694225 = 6538514^2 + 813065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43413240022421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43413240022121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21706620011210 + 21706620011211.

It is an arithmetic number, because the mean of its divisors is an integer number (21706620011211).

Almost surely, 2^{43413240022421} is an apocalyptic number.

It is an amenable number.

43413240022421 is a deficient number, since it is larger than the sum of its proper divisors (1).

43413240022421 is an equidigital number, since it uses as much as digits as its factorization.

43413240022421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 43413240022421 its reverse (12422004231434), we get a palindrome (55835244253855).

The spelling of 43413240022421 in words is "forty-three trillion, four hundred thirteen billion, two hundred forty million, twenty-two thousand, four hundred twenty-one".