420044071 has 2 divisors, whose sum is σ = 420044072. Its totient is φ = 420044070.

The previous prime is 420044021. The next prime is 420044089. The reversal of 420044071 is 170440024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420044071 - 2¹¹ = 420042023 is a prime.

It is a super-3 number, since 3×420044071³ (a number of 27 digits) contains 333 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 (420044021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210022035 + 210022036.

It is an arithmetic number, because the mean of its divisors is an integer number (210022036).

Almost surely, 2^420044071 is an apocalyptic number.

420044071 is a deficient number, since it is larger than the sum of its proper divisors (1).

420044071 is an equidigital number, since it uses as much as digits as its factorization.

420044071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 420044071 is about 20494.9767260175. The cubic root of 420044071 is about 748.9134316228.

Adding to 420044071 its reverse (170440024), we get a palindrome (590484095).

The spelling of 420044071 in words is "four hundred twenty million, forty-four thousand, seventy-one".