420236375 has 16 divisors (see below), whose sum is σ = 564799872. Its totient is φ = 310327200.

The previous prime is 420236359. The next prime is 420236389. The reversal of 420236375 is 573632024.

It is not a de Polignac number, because 420236375 - 2⁴ = 420236359 is a prime.

It is a super-2 number, since 2×420236375² = 353197221746281250, which contains 22 as substring.

It is a congruent number.

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, 127679 + ... + 130928.

It is an arithmetic number, because the mean of its divisors is an integer number (35299992).

Almost surely, 2^420236375 is an apocalyptic number.

420236375 is a deficient number, since it is larger than the sum of its proper divisors (144563497).

420236375 is a wasteful number, since it uses less digits than its factorization.

420236375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258635 (or 258625 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 420236375 is about 20499.6676802333. The cubic root of 420236375 is about 749.0277030258.

Adding to 420236375 its reverse (573632024), we get a palindrome (993868399).

The spelling of 420236375 in words is "four hundred twenty million, two hundred thirty-six thousand, three hundred seventy-five".