420541757 has 2 divisors, whose sum is σ = 420541758. Its totient is φ = 420541756.

The previous prime is 420541739. The next prime is 420541777. The reversal of 420541757 is 757145024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311840281 + 108701476 = 17659^2 + 10426^2 .

It is a cyclic number.

It is not a de Polignac number, because 420541757 - 2²⁴ = 403764541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420541717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210270878 + 210270879.

It is an arithmetic number, because the mean of its divisors is an integer number (210270879).

Almost surely, 2^420541757 is an apocalyptic number.

It is an amenable number.

420541757 is a deficient number, since it is larger than the sum of its proper divisors (1).

420541757 is an equidigital number, since it uses as much as digits as its factorization.

420541757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 420541757 is about 20507.1147897504. The cubic root of 420541757 is about 749.2090963291.

The spelling of 420541757 in words is "four hundred twenty million, five hundred forty-one thousand, seven hundred fifty-seven".