420432454 has 12 divisors (see below), whose sum is σ = 682892316. Its totient is φ = 194045592.

The previous prime is 420432451. The next prime is 420432497. The reversal of 420432454 is 454234024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420432451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 621604 + ... + 622279.

It is an arithmetic number, because the mean of its divisors is an integer number (56907693).

Almost surely, 2^420432454 is an apocalyptic number.

420432454 is a deficient number, since it is larger than the sum of its proper divisors (262459862).

420432454 is a wasteful number, since it uses less digits than its factorization.

420432454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243911 (or 1243898 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 420432454 is about 20504.4496146568. The cubic root of 420432454 is about 749.1441817308.

Adding to 420432454 its reverse (454234024), we get a palindrome (874666478).

The spelling of 420432454 in words is "four hundred twenty million, four hundred thirty-two thousand, four hundred fifty-four".