420415804 has 48 divisors (see below), whose sum is σ = 791513856. Its totient is φ = 194902400.

The previous prime is 420415789. The next prime is 420415819. The reversal of 420415804 is 408514024.

It is an interprime number because it is at equal distance from previous prime (420415789) and next prime (420415819).

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, 855999 + ... + 856489.

It is an arithmetic number, because the mean of its divisors is an integer number (16489872).

Almost surely, 2^420415804 is an apocalyptic number.

It is an amenable number.

420415804 is a deficient number, since it is larger than the sum of its proper divisors (371098052).

420415804 is a wasteful number, since it uses less digits than its factorization.

420415804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 420415804 is about 20504.0436012022. The cubic root of 420415804 is about 749.1342923775.

Adding to 420415804 its reverse (408514024), we get a palindrome (828929828).

The spelling of 420415804 in words is "four hundred twenty million, four hundred fifteen thousand, eight hundred four".