420002 has 16 divisors (see below), whose sum is σ = 728352. Its totient is φ = 179520.

The previous prime is 420001. The next prime is 420029. The reversal of 420002 is 200024.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420002.

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, 188 + ... + 935.

It is an arithmetic number, because the mean of its divisors is an integer number (45522).

2⁴²⁰⁰⁰² is an apocalyptic number.

420002 is a deficient number, since it is larger than the sum of its proper divisors (308350).

420002 is a wasteful number, since it uses less digits than its factorization.

420002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 420002 is about 648.0756128724. The cubic root of 420002 is about 74.8888427430. Note that the first 4 decimals are identical.

Subtracting from 420002 its product of nonzero digits (16), we obtain a triangular number (419986 = T₉₁₆).

Adding to 420002 its reverse (200024), we get a palindrome (620026).

It can be divided in two parts, 4 and 20002, that multiplied together give a palindrome (80008).

The spelling of 420002 in words is "four hundred twenty thousand, two", and thus it is an iban number.