144173420 has 24 divisors (see below), whose sum is σ = 306600000. Its totient is φ = 56938752.

The previous prime is 144173417. The next prime is 144173429. The reversal of 144173420 is 24371441.

It is a self number, because there is not a number n which added to its sum of digits gives 144173420.

It is not an unprimeable number, because it can be changed into a prime (144173429) 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, 44045 + ... + 47204.

It is an arithmetic number, because the mean of its divisors is an integer number (12775000).

Almost surely, 2^144173420 is an apocalyptic number.

144173420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144173420 is an abundant number, since it is smaller than the sum of its proper divisors (162426580).

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

144173420 is a wasteful number, since it uses less digits than its factorization.

144173420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91337 (or 91335 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 144173420 is about 12007.2236591145. The cubic root of 144173420 is about 524.3586059930.

The spelling of 144173420 in words is "one hundred forty-four million, one hundred seventy-three thousand, four hundred twenty".