420243452 has 12 divisors (see below), whose sum is σ = 735756840. Its totient is φ = 210027216.

The previous prime is 420243431. The next prime is 420243517. The reversal of 420243452 is 254342024.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13103 + ... + 31814.

It is an arithmetic number, because the mean of its divisors is an integer number (61313070).

Almost surely, 2^420243452 is an apocalyptic number.

It is an amenable number.

420243452 is a deficient number, since it is larger than the sum of its proper divisors (315513388).

420243452 is a wasteful number, since it uses less digits than its factorization.

420243452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47260 (or 47258 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 420243452 is about 20499.8402920608. The cubic root of 420243452 is about 749.0319076747.

Adding to 420243452 its reverse (254342024), we get a palindrome (674585476).

The spelling of 420243452 in words is "four hundred twenty million, two hundred forty-three thousand, four hundred fifty-two".