420080069 has 2 divisors, whose sum is σ = 420080070. Its totient is φ = 420080068.

The previous prime is 420080053. The next prime is 420080077. The reversal of 420080069 is 960080024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402523969 + 17556100 = 20063^2 + 4190^2 .

It is a cyclic number.

It is not a de Polignac number, because 420080069 - 2⁴ = 420080053 is a prime.

It is a super-2 number, since 2×420080069² = 352934528742089522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420080009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210040034 + 210040035.

It is an arithmetic number, because the mean of its divisors is an integer number (210040035).

Almost surely, 2^420080069 is an apocalyptic number.

It is an amenable number.

420080069 is a deficient number, since it is larger than the sum of its proper divisors (1).

420080069 is an equidigital number, since it uses as much as digits as its factorization.

420080069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 420080069 is about 20495.8549223983. The cubic root of 420080069 is about 748.9348251046.

The spelling of 420080069 in words is "four hundred twenty million, eighty thousand, sixty-nine".