420542433 has 12 divisors (see below), whose sum is σ = 613713828. Its totient is φ = 277470720.

The previous prime is 420542429. The next prime is 420542449. The reversal of 420542433 is 334245024.

420542433 is a `hidden beast` number, since 4 + 205 + 424 + 33 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 278622864 + 141919569 = 16692^2 + 11913^2 .

It is not a de Polignac number, because 420542433 - 2² = 420542429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420542397 and 420542406.

It is not an unprimeable number, because it can be changed into a prime (420542233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239988 + ... + 241733.

It is an arithmetic number, because the mean of its divisors is an integer number (51142819).

Almost surely, 2^420542433 is an apocalyptic number.

It is an amenable number.

420542433 is a deficient number, since it is larger than the sum of its proper divisors (193171395).

420542433 is a wasteful number, since it uses less digits than its factorization.

420542433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481824 (or 481821 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 420542433 is about 20507.1312718283. The cubic root of 420542433 is about 749.2094977677.

Adding to 420542433 its reverse (334245024), we get a palindrome (754787457).

The spelling of 420542433 in words is "four hundred twenty million, five hundred forty-two thousand, four hundred thirty-three".