424420420 has 12 divisors (see below), whose sum is σ = 891282924. Its totient is φ = 169768160.

The previous prime is 424420379. The next prime is 424420427. The reversal of 424420420 is 24024424.

It can be written as a sum of positive squares in 2 ways, for example, as 199600384 + 224820036 = 14128^2 + 14994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424420391 and 424420400.

It is not an unprimeable number, because it can be changed into a prime (424420427) 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, 10610491 + ... + 10610530.

It is an arithmetic number, because the mean of its divisors is an integer number (74273577).

Almost surely, 2^424420420 is an apocalyptic number.

It is an amenable number.

424420420 is an abundant number, since it is smaller than the sum of its proper divisors (466862504).

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

424420420 is a wasteful number, since it uses less digits than its factorization.

424420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221030 (or 21221028 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 424420420 is about 20601.4664526582. The cubic root of 424420420 is about 751.5053734830.

Adding to 424420420 its reverse (24024424), we get a palindrome (448444844).

The spelling of 424420420 in words is "four hundred twenty-four million, four hundred twenty thousand, four hundred twenty".