144421512 has 32 divisors (see below), whose sum is σ = 364372800. Its totient is φ = 47697984.

The previous prime is 144421507. The next prime is 144421517. The reversal of 144421512 is 215124441.

It is an interprime number because it is at equal distance from previous prime (144421507) and next prime (144421517).

It is a super-2 number, since 2×144421512² = 41715146256732288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (144421517) 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, 24988 + ... + 30219.

It is an arithmetic number, because the mean of its divisors is an integer number (11386650).

Almost surely, 2^144421512 is an apocalyptic number.

144421512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

144421512 is an abundant number, since it is smaller than the sum of its proper divisors (219951288).

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

144421512 is a wasteful number, since it uses less digits than its factorization.

144421512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55325 (or 55321 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 144421512 is about 12017.5501663193. The cubic root of 144421512 is about 524.6592037682.

Adding to 144421512 its reverse (215124441), we get a palindrome (359545953).

The spelling of 144421512 in words is "one hundred forty-four million, four hundred twenty-one thousand, five hundred twelve".