144021132 has 48 divisors (see below), whose sum is σ = 374556000. Its totient is φ = 47856960.

The previous prime is 144021103. The next prime is 144021139. The reversal of 144021132 is 231120441.

It is a super-2 number, since 2×144021132² = 41484172925122848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (144021139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35782 + ... + 39602.

It is an arithmetic number, because the mean of its divisors is an integer number (7803250).

Almost surely, 2^144021132 is an apocalyptic number.

144021132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

144021132 is an abundant number, since it is smaller than the sum of its proper divisors (230534868).

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

144021132 is a wasteful number, since it uses less digits than its factorization.

144021132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183 (or 4175 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 144021132 is about 12000.8804676990. The cubic root of 144021132 is about 524.1739171743.

Adding to 144021132 its reverse (231120441), we get a palindrome (375141573).

The spelling of 144021132 in words is "one hundred forty-four million, twenty-one thousand, one hundred thirty-two".