420743471 has 2 divisors, whose sum is σ = 420743472. Its totient is φ = 420743470.

The previous prime is 420743461. The next prime is 420743537. The reversal of 420743471 is 174347024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420743471 - 2²² = 416549167 is a prime.

It is a super-3 number, since 3×420743471³ (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 (420743461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210371735 + 210371736.

It is an arithmetic number, because the mean of its divisors is an integer number (210371736).

Almost surely, 2^420743471 is an apocalyptic number.

420743471 is a deficient number, since it is larger than the sum of its proper divisors (1).

420743471 is an equidigital number, since it uses as much as digits as its factorization.

420743471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 420743471 is about 20512.0323468934. The cubic root of 420743471 is about 749.3288639106.

The spelling of 420743471 in words is "four hundred twenty million, seven hundred forty-three thousand, four hundred seventy-one".