420552428 has 12 divisors (see below), whose sum is σ = 751625952. Its totient is φ = 205802160.

The previous prime is 420552421. The next prime is 420552437. The reversal of 420552428 is 824255024.

It is a junction number, because it is equal to n+sod(n) for n = 420552394 and 420552403.

It is not an unprimeable number, because it can be changed into a prime (420552421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118303 + ... + 1118678.

It is an arithmetic number, because the mean of its divisors is an integer number (62635496).

Almost surely, 2^420552428 is an apocalyptic number.

It is an amenable number.

420552428 is a deficient number, since it is larger than the sum of its proper divisors (331073524).

420552428 is a wasteful number, since it uses less digits than its factorization.

420552428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237032 (or 2237030 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 420552428 is about 20507.3749660945. The cubic root of 420552428 is about 749.2154331890.

The spelling of 420552428 in words is "four hundred twenty million, five hundred fifty-two thousand, four hundred twenty-eight".