420355250 has 32 divisors (see below), whose sum is σ = 899323776. Its totient is φ = 144121200.

The previous prime is 420355237. The next prime is 420355279. The reversal of 420355250 is 52553024.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 118352 + ... + 121851.

It is an arithmetic number, because the mean of its divisors is an integer number (28103868).

Almost surely, 2^420355250 is an apocalyptic number.

420355250 is an abundant number, since it is smaller than the sum of its proper divisors (478968526).

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

420355250 is a wasteful number, since it uses less digits than its factorization.

420355250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240227 (or 240217 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 420355250 is about 20502.5669124624. The cubic root of 420355250 is about 749.0983238152.

The spelling of 420355250 in words is "four hundred twenty million, three hundred fifty-five thousand, two hundred fifty".