420050257 has 16 divisors (see below), whose sum is σ = 463325184. Its totient is φ = 377650000.

The previous prime is 420050251. The next prime is 420050287. The reversal of 420050257 is 752050024.

It is a cyclic number.

It is not a de Polignac number, because 420050257 - 2¹⁹ = 419525969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420050251) by changing a digit.

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, 460632 + ... + 461542.

It is an arithmetic number, because the mean of its divisors is an integer number (28957824).

Almost surely, 2^420050257 is an apocalyptic number.

It is an amenable number.

420050257 is a deficient number, since it is larger than the sum of its proper divisors (43274927).

420050257 is a wasteful number, since it uses less digits than its factorization.

420050257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 420050257 is about 20495.1276404906. The cubic root of 420050257 is about 748.9171080273.

The spelling of 420050257 in words is "four hundred twenty million, fifty thousand, two hundred fifty-seven".