420941089 has 2 divisors, whose sum is σ = 420941090. Its totient is φ = 420941088.

The previous prime is 420941077. The next prime is 420941113. The reversal of 420941089 is 980149024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369216225 + 51724864 = 19215^2 + 7192^2 .

It is a cyclic number.

It is not a de Polignac number, because 420941089 - 2⁹ = 420940577 is a prime.

It is not a weakly prime, because it can be changed into another prime (420941069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210470544 + 210470545.

It is an arithmetic number, because the mean of its divisors is an integer number (210470545).

Almost surely, 2^420941089 is an apocalyptic number.

It is an amenable number.

420941089 is a deficient number, since it is larger than the sum of its proper divisors (1).

420941089 is an equidigital number, since it uses as much as digits as its factorization.

420941089 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 37.

The square root of 420941089 is about 20516.8489052291. The cubic root of 420941089 is about 749.4461623784.

The spelling of 420941089 in words is "four hundred twenty million, nine hundred forty-one thousand, eighty-nine".