420545024 has 20 divisors (see below), whose sum is σ = 840269694. Its totient is φ = 210272256.

The previous prime is 420545023. The next prime is 420545033.

420545024 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 384160000 + 36385024 = 19600^2 + 6032^2 .

It is a super-2 number, since 2×420545024² = 353716234422321152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420544984 and 420545002.

It is not an unprimeable number, because it can be changed into a prime (420545023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410177 + ... + 411200.

Almost surely, 2^420545024 is an apocalyptic number.

It is an amenable number.

420545024 is a deficient number, since it is larger than the sum of its proper divisors (419724670).

420545024 is an frugal number, since it uses more digits than its factorization.

420545024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821395 (or 821379 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 420545024 is about 20507.1944448771. The cubic root of 420545024 is about 749.2110364137.

The spelling of 420545024 in words is "four hundred twenty million, five hundred forty-five thousand, twenty-four".