420236249 has 2 divisors, whose sum is σ = 420236250. Its totient is φ = 420236248.

The previous prime is 420236213. The next prime is 420236273. The reversal of 420236249 is 942632024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 358723600 + 61512649 = 18940^2 + 7843^2 .

It is a cyclic number.

It is not a de Polignac number, because 420236249 - 2¹⁶ = 420170713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420230249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210118124 + 210118125.

It is an arithmetic number, because the mean of its divisors is an integer number (210118125).

Almost surely, 2^420236249 is an apocalyptic number.

It is an amenable number.

420236249 is a deficient number, since it is larger than the sum of its proper divisors (1).

420236249 is an equidigital number, since it uses as much as digits as its factorization.

420236249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 420236249 is about 20499.6646070125. The cubic root of 420236249 is about 749.0276281651.

The spelling of 420236249 in words is "four hundred twenty million, two hundred thirty-six thousand, two hundred forty-nine".