420802 has 4 divisors (see below), whose sum is σ = 631206. Its totient is φ = 210400.

The previous prime is 420799. The next prime is 420803. The reversal of 420802 is 208024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 358801 + 62001 = 599^2 + 249^2 .

It is not an unprimeable number, because it can be changed into a prime (420803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105199 + ... + 105202.

2⁴²⁰⁸⁰² is an apocalyptic number.

420802 is a deficient number, since it is larger than the sum of its proper divisors (210404).

420802 is a wasteful number, since it uses less digits than its factorization.

420802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210403.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 420802 is about 648.6925311733. The cubic root of 420802 is about 74.9363608308.

Adding to 420802 its reverse (208024), we get a palindrome (628826).

The spelling of 420802 in words is "four hundred twenty thousand, eight hundred two".