420300440 has 48 divisors (see below), whose sum is σ = 1100077200. Its totient is φ = 144102336.

The previous prime is 420300409. The next prime is 420300457. The reversal of 420300440 is 44003024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105260 + ... + 109179.

It is an arithmetic number, because the mean of its divisors is an integer number (22918275).

Almost surely, 2^420300440 is an apocalyptic number.

420300440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420300440 is an abundant number, since it is smaller than the sum of its proper divisors (679776760).

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

420300440 is a wasteful number, since it uses less digits than its factorization.

420300440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214464 (or 214453 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 420300440 is about 20501.2302069900. The cubic root of 420300440 is about 749.0657641618.

Adding to 420300440 its reverse (44003024), we get a palindrome (464303464).

The spelling of 420300440 in words is "four hundred twenty million, three hundred thousand, four hundred forty".