144420312 has 32 divisors (see below), whose sum is σ = 376750080. Its totient is φ = 46046880.

The previous prime is 144420307. The next prime is 144420329. The reversal of 144420312 is 213024441.

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, 130264 + ... + 131367.

It is an arithmetic number, because the mean of its divisors is an integer number (11773440).

Almost surely, 2^144420312 is an apocalyptic number.

144420312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

144420312 is an abundant number, since it is smaller than the sum of its proper divisors (232329768).

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

144420312 is a wasteful number, since it uses less digits than its factorization.

144420312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261663 (or 261659 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144420312 is about 12017.5002392344. The cubic root of 144420312 is about 524.6577506310.

Adding to 144420312 its reverse (213024441), we get a palindrome (357444753).

The spelling of 144420312 in words is "one hundred forty-four million, four hundred twenty thousand, three hundred twelve".