420040202 has 4 divisors (see below), whose sum is σ = 630060306. Its totient is φ = 210020100.

The previous prime is 420040183. The next prime is 420040213. The reversal of 420040202 is 202040024.

It is a happy number.

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., 419799121 + 241081 = 20489^2 + 491^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010049 + ... + 105010052.

Almost surely, 2^420040202 is an apocalyptic number.

420040202 is a deficient number, since it is larger than the sum of its proper divisors (210020104).

420040202 is a wasteful number, since it uses less digits than its factorization.

420040202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210020103.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 420040202 is about 20494.8823368176. The cubic root of 420040202 is about 748.9111322173.

Adding to 420040202 its reverse (202040024), we get a palindrome (622080226).

The spelling of 420040202 in words is "four hundred twenty million, forty thousand, two hundred two".