420320452 has 6 divisors (see below), whose sum is σ = 735560798. Its totient is φ = 210160224.

The previous prime is 420320449. The next prime is 420320471. The reversal of 420320452 is 254023024.

It can be written as a sum of positive squares in only one way, i.e., 277422336 + 142898116 = 16656^2 + 11954^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52540053 + ... + 52540060.

Almost surely, 2^420320452 is an apocalyptic number.

It is an amenable number.

420320452 is a deficient number, since it is larger than the sum of its proper divisors (315240346).

420320452 is a wasteful number, since it uses less digits than its factorization.

420320452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105080117 (or 105080115 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 420320452 is about 20501.7182694524. The cubic root of 420320452 is about 749.0776525356.

Adding to 420320452 its reverse (254023024), we get a palindrome (674343476).

The spelling of 420320452 in words is "four hundred twenty million, three hundred twenty thousand, four hundred fifty-two".