423614021 has 2 divisors, whose sum is σ = 423614022. Its totient is φ = 423614020.

The previous prime is 423613943. The next prime is 423614053. The reversal of 423614021 is 120416324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235622500 + 187991521 = 15350^2 + 13711^2 .

It is a cyclic number.

It is not a de Polignac number, because 423614021 - 2¹⁴ = 423597637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423614921) 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, 211807010 + 211807011.

It is an arithmetic number, because the mean of its divisors is an integer number (211807011).

Almost surely, 2^423614021 is an apocalyptic number.

It is an amenable number.

423614021 is a deficient number, since it is larger than the sum of its proper divisors (1).

423614021 is an equidigital number, since it uses as much as digits as its factorization.

423614021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 423614021 is about 20581.8857493671. The cubic root of 423614021 is about 751.0291182047.

The spelling of 423614021 in words is "four hundred twenty-three million, six hundred fourteen thousand, twenty-one".