420724455 has 16 divisors (see below), whose sum is σ = 673421280. Its totient is φ = 224299008.

The previous prime is 420724453. The next prime is 420724459. The reversal of 420724455 is 554427024.

It is not a de Polignac number, because 420724455 - 2¹ = 420724453 is a prime.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58539 + ... + 65331.

It is an arithmetic number, because the mean of its divisors is an integer number (42088830).

Almost surely, 2^420724455 is an apocalyptic number.

420724455 is a deficient number, since it is larger than the sum of its proper divisors (252696825).

420724455 is a wasteful number, since it uses less digits than its factorization.

420724455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10930.

The product of its (nonzero) digits is 44800, while the sum is 33.

The square root of 420724455 is about 20511.5688088454. The cubic root of 420724455 is about 749.3175748050.

The spelling of 420724455 in words is "four hundred twenty million, seven hundred twenty-four thousand, four hundred fifty-five".