420300557 has 4 divisors (see below), whose sum is σ = 420531936. Its totient is φ = 420069180.

The previous prime is 420300527. The next prime is 420300583. The reversal of 420300557 is 755003024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420300557 - 2¹⁴ = 420284173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420300527) 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 3 ways as a sum of consecutive naturals, for example, 112943 + ... + 116604.

It is an arithmetic number, because the mean of its divisors is an integer number (105132984).

Almost surely, 2^420300557 is an apocalyptic number.

It is an amenable number.

420300557 is a deficient number, since it is larger than the sum of its proper divisors (231379).

420300557 is a wasteful number, since it uses less digits than its factorization.

420300557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231378.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 420300557 is about 20501.2330604771. The cubic root of 420300557 is about 749.0658336682.

The spelling of 420300557 in words is "four hundred twenty million, three hundred thousand, five hundred fifty-seven".