144435420 has 96 divisors (see below), whose sum is σ = 461563200. Its totient is φ = 37469952.

The previous prime is 144435413. The next prime is 144435433. The reversal of 144435420 is 24534441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16366 + ... + 23594.

It is an arithmetic number, because the mean of its divisors is an integer number (4807950).

Almost surely, 2^144435420 is an apocalyptic number.

144435420 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 144435420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230781600).

144435420 is an abundant number, since it is smaller than the sum of its proper divisors (317127780).

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

144435420 is a wasteful number, since it uses less digits than its factorization.

144435420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284 (or 7276 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 144435420 is about 12018.1288060996. The cubic root of 144435420 is about 524.6760450404.

Adding to 144435420 its reverse (24534441), we get a palindrome (168969861).

It can be divided in two parts, 1444 and 35420, that added together give a square (36864 = 192²).

The spelling of 144435420 in words is "one hundred forty-four million, four hundred thirty-five thousand, four hundred twenty".