236434421 has 2 divisors, whose sum is σ = 236434422. Its totient is φ = 236434420.

The previous prime is 236434397. The next prime is 236434469. The reversal of 236434421 is 124434632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156600196 + 79834225 = 12514^2 + 8935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-236434421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236430421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118217210 + 118217211.

It is an arithmetic number, because the mean of its divisors is an integer number (118217211).

Almost surely, 2^236434421 is an apocalyptic number.

It is an amenable number.

236434421 is a deficient number, since it is larger than the sum of its proper divisors (1).

236434421 is an equidigital number, since it uses as much as digits as its factorization.

236434421 is an evil number, because the sum of its binary digits is even.

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

The square root of 236434421 is about 15376.4241942007. The cubic root of 236434421 is about 618.3536106056.

The spelling of 236434421 in words is "two hundred thirty-six million, four hundred thirty-four thousand, four hundred twenty-one".