424220240 has 40 divisors (see below), whose sum is σ = 991305600. Its totient is φ = 168829056.

The previous prime is 424220189. The next prime is 424220249. The reversal of 424220240 is 42022424.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424220249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2597 + ... + 29243.

It is an arithmetic number, because the mean of its divisors is an integer number (24782640).

Almost surely, 2^424220240 is an apocalyptic number.

424220240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424220240 is an abundant number, since it is smaller than the sum of its proper divisors (567085360).

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

424220240 is a wasteful number, since it uses less digits than its factorization.

424220240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26859 (or 26853 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 424220240 is about 20596.6074876422. The cubic root of 424220240 is about 751.3872044882.

Adding to 424220240 its reverse (42022424), we get a palindrome (466242664).

The spelling of 424220240 in words is "four hundred twenty-four million, two hundred twenty thousand, two hundred forty".