424243420 has 24 divisors (see below), whose sum is σ = 900925200. Its totient is φ = 167789952.

The previous prime is 424243363. The next prime is 424243423. The reversal of 424243420 is 24342424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424243423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117390 + ... + 120949.

It is an arithmetic number, because the mean of its divisors is an integer number (37538550).

Almost surely, 2^424243420 is an apocalyptic number.

It is an amenable number.

424243420 is an abundant number, since it is smaller than the sum of its proper divisors (476681780).

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

424243420 is a wasteful number, since it uses less digits than its factorization.

424243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238437 (or 238435 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 424243420 is about 20597.1701939854. The cubic root of 424243420 is about 751.4008898624.

Adding to 424243420 its reverse (24342424), we get a palindrome (448585844).

The spelling of 424243420 in words is "four hundred twenty-four million, two hundred forty-three thousand, four hundred twenty".