420724454 has 8 divisors (see below), whose sum is σ = 639075360. Its totient is φ = 207699336.

The previous prime is 420724453. The next prime is 420724459. The reversal of 420724454 is 454427024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 420724454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420724453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331249 + ... + 1331564.

It is an arithmetic number, because the mean of its divisors is an integer number (79884420).

Almost surely, 2^420724454 is an apocalyptic number.

420724454 is a deficient number, since it is larger than the sum of its proper divisors (218350906).

420724454 is a wasteful number, since it uses less digits than its factorization.

420724454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662894.

The product of its (nonzero) digits is 35840, while the sum is 32.

The square root of 420724454 is about 20511.5687844689. The cubic root of 420724454 is about 749.3175742114.

The spelling of 420724454 in words is "four hundred twenty million, seven hundred twenty-four thousand, four hundred fifty-four".