420934277 has 2 divisors, whose sum is σ = 420934278. Its totient is φ = 420934276.

The previous prime is 420934271. The next prime is 420934301. The reversal of 420934277 is 772439024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338596801 + 82337476 = 18401^2 + 9074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420934277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420934277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420934271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210467138 + 210467139.

It is an arithmetic number, because the mean of its divisors is an integer number (210467139).

Almost surely, 2^420934277 is an apocalyptic number.

It is an amenable number.

420934277 is a deficient number, since it is larger than the sum of its proper divisors (1).

420934277 is an equidigital number, since it uses as much as digits as its factorization.

420934277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 420934277 is about 20516.6828946592. The cubic root of 420934277 is about 749.4421196474.

The spelling of 420934277 in words is "four hundred twenty million, nine hundred thirty-four thousand, two hundred seventy-seven".