144123220 has 24 divisors (see below), whose sum is σ = 303787008. Its totient is φ = 57434400.

The previous prime is 144123169. The next prime is 144123233. The reversal of 144123220 is 22321441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7876 + ... + 18715.

It is an arithmetic number, because the mean of its divisors is an integer number (12657792).

Almost surely, 2^144123220 is an apocalyptic number.

144123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144123220 is an abundant number, since it is smaller than the sum of its proper divisors (159663788).

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

144123220 is a wasteful number, since it uses less digits than its factorization.

144123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26871 (or 26869 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 144123220 is about 12005.1330688169. The cubic root of 144123220 is about 524.2977398090.

Adding to 144123220 its reverse (22321441), we get a palindrome (166444661).

The spelling of 144123220 in words is "one hundred forty-four million, one hundred twenty-three thousand, two hundred twenty".