420452 has 12 divisors (see below), whose sum is σ = 740460. Its totient is φ = 208896.

The previous prime is 420439. The next prime is 420457. The reversal of 420452 is 254024.

It can be written as a sum of positive squares in 2 ways, for example, as 401956 + 18496 = 634^2 + 136^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 420452.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420452.

It is not an unprimeable number, because it can be changed into a prime (420457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (61705).

2⁴²⁰⁴⁵² is an apocalyptic number.

It is an amenable number.

420452 is a deficient number, since it is larger than the sum of its proper divisors (320008).

420452 is a wasteful number, since it uses less digits than its factorization.

420452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 420452 is about 648.4227016384. The cubic root of 420452 is about 74.9155790845.

Adding to 420452 its reverse (254024), we get a palindrome (674476).

The spelling of 420452 in words is "four hundred twenty thousand, four hundred fifty-two".