420056450 has 24 divisors (see below), whose sum is σ = 852333840. Its totient is φ = 152747600.

The previous prime is 420056447. The next prime is 420056473. The reversal of 420056450 is 54650024.

It is a super-3 number, since 3×420056450³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 381320 + ... + 382419.

It is an arithmetic number, because the mean of its divisors is an integer number (35513910).

Almost surely, 2^420056450 is an apocalyptic number.

420056450 is an abundant number, since it is smaller than the sum of its proper divisors (432277390).

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

420056450 is a wasteful number, since it uses less digits than its factorization.

420056450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763762 (or 763757 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 420056450 is about 20495.2787246234. The cubic root of 420056450 is about 748.9207885558.

The spelling of 420056450 in words is "four hundred twenty million, fifty-six thousand, four hundred fifty".