424020040 has 16 divisors (see below), whose sum is σ = 954045180. Its totient is φ = 169608000.

The previous prime is 424020031. The next prime is 424020067. The reversal of 424020040 is 40020424.

It can be written as a sum of positive squares in 2 ways, for example, as 387223684 + 36796356 = 19678^2 + 6066^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424019996 and 424020023.

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, 5300211 + ... + 5300290.

Almost surely, 2^424020040 is an apocalyptic number.

424020040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424020040 is an abundant number, since it is smaller than the sum of its proper divisors (530025140).

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

424020040 is a wasteful number, since it uses less digits than its factorization.

424020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600512 (or 10600508 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 424020040 is about 20591.7468904413. The cubic root of 424020040 is about 751.2689865015.

Adding to 424020040 its reverse (40020424), we get a palindrome (464040464).

The spelling of 424020040 in words is "four hundred twenty-four million, twenty thousand, forty".