420545002 has 12 divisors (see below), whose sum is σ = 644531490. Its totient is φ = 205796456.

The previous prime is 420544991. The next prime is 420545003. The reversal of 420545002 is 200545024.

It can be written as a sum of positive squares in only one way, i.e., 395254161 + 25290841 = 19881^2 + 5029^2 .

It is not an unprimeable number, because it can be changed into a prime (420545003) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 43177 + ... + 52012.

Almost surely, 2^420545002 is an apocalyptic number.

420545002 is a deficient number, since it is larger than the sum of its proper divisors (223986488).

420545002 is an equidigital number, since it uses as much as digits as its factorization.

420545002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95285 (or 95238 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 420545002 is about 20507.1939084800. The cubic root of 420545002 is about 749.2110233492.

Adding to 420545002 its sum of digits (22), we get a palindrome (420545024).

The spelling of 420545002 in words is "four hundred twenty million, five hundred forty-five thousand, two".