420500053 has 16 divisors (see below), whose sum is σ = 450552960. Its totient is φ = 391495104.

The previous prime is 420500051. The next prime is 420500057. The reversal of 420500053 is 350005024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420500053 - 2¹ = 420500051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420500053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420500051) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 384175 + ... + 385267.

It is an arithmetic number, because the mean of its divisors is an integer number (28159560).

Almost surely, 2^420500053 is an apocalyptic number.

420500053 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

420500053 is a deficient number, since it is larger than the sum of its proper divisors (30052907).

420500053 is a wasteful number, since it uses less digits than its factorization.

420500053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 420500053 is about 20506.0979467084. The cubic root of 420500053 is about 749.1843298237.

Adding to 420500053 its reverse (350005024), we get a palindrome (770505077).

The spelling of 420500053 in words is "four hundred twenty million, five hundred thousand, fifty-three".