420004 has 24 divisors (see below), whose sum is σ = 814968. Its totient is φ = 188160.

The previous prime is 420001. The next prime is 420029. The reversal of 420004 is 400024.

It can be written as a sum of positive squares in 4 ways, for example, as 23104 + 396900 = 152^2 + 630^2 .

It is not an unprimeable number, because it can be changed into a prime (420001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (33957).

2⁴²⁰⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

420004 is a deficient number, since it is larger than the sum of its proper divisors (394964).

420004 is a wasteful number, since it uses less digits than its factorization.

420004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 420004 is about 648.0771559004. The cubic root of 420004 is about 74.8889616134. Note that the first 3 decimals are identical.

Adding to 420004 its reverse (400024), we get a palindrome (820028).

The spelling of 420004 in words is "four hundred twenty thousand, four", and thus it is an iban number.