424540520 has 16 divisors (see below), whose sum is σ = 955216260. Its totient is φ = 169816192.

The previous prime is 424540517. The next prime is 424540537. The reversal of 424540520 is 25045424.

It can be written as a sum of positive squares in 2 ways, for example, as 399760036 + 24780484 = 19994^2 + 4978^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 424540520.

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, 5306717 + ... + 5306796.

Almost surely, 2^424540520 is an apocalyptic number.

424540520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424540520 is an abundant number, since it is smaller than the sum of its proper divisors (530675740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

424540520 is a wasteful number, since it uses less digits than its factorization.

424540520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10613524 (or 10613520 counting only the distinct ones).

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

The square root of 424540520 is about 20604.3810875260. The cubic root of 424540520 is about 751.5762523248.

Adding to 424540520 its reverse (25045424), we get a palindrome (449585944).

The spelling of 424540520 in words is "four hundred twenty-four million, five hundred forty thousand, five hundred twenty".