236443421 has 2 divisors, whose sum is σ = 236443422. Its totient is φ = 236443420.

The previous prime is 236443411. The next prime is 236443447. The reversal of 236443421 is 124344632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230736100 + 5707321 = 15190^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 236443421 - 2¹⁸ = 236181277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236443411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118221710 + 118221711.

It is an arithmetic number, because the mean of its divisors is an integer number (118221711).

Almost surely, 2^236443421 is an apocalyptic number.

It is an amenable number.

236443421 is a deficient number, since it is larger than the sum of its proper divisors (1).

236443421 is an equidigital number, since it uses as much as digits as its factorization.

236443421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 29.

The square root of 236443421 is about 15376.7168472337. The cubic root of 236443421 is about 618.3614564906.

The spelling of 236443421 in words is "two hundred thirty-six million, four hundred forty-three thousand, four hundred twenty-one".