424222040 has 64 divisors (see below), whose sum is σ = 1043400960. Its totient is φ = 153947520.

The previous prime is 424222033. The next prime is 424222049. The reversal of 424222040 is 40222424.

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 (424222049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398549 + ... + 399611.

It is an arithmetic number, because the mean of its divisors is an integer number (16303140).

Almost surely, 2^424222040 is an apocalyptic number.

424222040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424222040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521700480).

424222040 is an abundant number, since it is smaller than the sum of its proper divisors (619178920).

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

424222040 is a wasteful number, since it uses less digits than its factorization.

424222040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992 (or 1988 counting only the distinct ones).

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

The square root of 424222040 is about 20596.6511841124. The cubic root of 424222040 is about 751.3882672185.

Adding to 424222040 its reverse (40222424), we get a palindrome (464444464).

The spelling of 424222040 in words is "four hundred twenty-four million, two hundred twenty-two thousand, forty".