420751733 has 2 divisors, whose sum is σ = 420751734. Its totient is φ = 420751732.

The previous prime is 420751703. The next prime is 420751739. The reversal of 420751733 is 337157024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286354084 + 134397649 = 16922^2 + 11593^2 .

It is a cyclic number.

It is not a de Polignac number, because 420751733 - 2⁸ = 420751477 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420751733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420751739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210375866 + 210375867.

It is an arithmetic number, because the mean of its divisors is an integer number (210375867).

Almost surely, 2^420751733 is an apocalyptic number.

It is an amenable number.

420751733 is a deficient number, since it is larger than the sum of its proper divisors (1).

420751733 is an equidigital number, since it uses as much as digits as its factorization.

420751733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 420751733 is about 20512.2337398929. The cubic root of 420751733 is about 749.3337686526. Note that the first 3 decimals are identical.

The spelling of 420751733 in words is "four hundred twenty million, seven hundred fifty-one thousand, seven hundred thirty-three".