420255520 has 24 divisors (see below), whose sum is σ = 992854044. Its totient is φ = 168102144.

The previous prime is 420255491. The next prime is 420255541. The reversal of 420255520 is 25552024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 418284304 + 1971216 = 20452^2 + 1404^2 .

It is a super-2 number, since 2×420255520² = 353229404180940800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313139 + ... + 1313458.

Almost surely, 2^420255520 is an apocalyptic number.

420255520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420255520 is an abundant number, since it is smaller than the sum of its proper divisors (572598524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420255520 is a wasteful number, since it uses less digits than its factorization.

420255520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626612 (or 2626604 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 420255520 is about 20500.1346337042. The cubic root of 420255520 is about 749.0390775112.

The spelling of 420255520 in words is "four hundred twenty million, two hundred fifty-five thousand, five hundred twenty".