144432420 has 96 divisors (see below), whose sum is σ = 449608320. Its totient is φ = 34344960.

The previous prime is 144432403. The next prime is 144432427. The reversal of 144432420 is 24234441.

It is a happy number.

144432420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (144432427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32916 + ... + 37044.

It is an arithmetic number, because the mean of its divisors is an integer number (4683420).

Almost surely, 2^144432420 is an apocalyptic number.

144432420 is a gapful number since it is divisible by the number (10) 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 144432420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224804160).

144432420 is an abundant number, since it is smaller than the sum of its proper divisors (305175900).

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

144432420 is a wasteful number, since it uses less digits than its factorization.

144432420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205 (or 4203 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 144432420 is about 12018.0039940083. The cubic root of 144432420 is about 524.6724124157.

Adding to 144432420 its reverse (24234441), we get a palindrome (168666861).

The spelling of 144432420 in words is "one hundred forty-four million, four hundred thirty-two thousand, four hundred twenty".