144540132 has 48 divisors (see below), whose sum is σ = 370440000. Its totient is φ = 43500160.

The previous prime is 144540131. The next prime is 144540133. The reversal of 144540132 is 231045441.

It is an interprime number because it is at equal distance from previous prime (144540131) and next prime (144540133).

It is not an unprimeable number, because it can be changed into a prime (144540131) 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, 15994 + ... + 23342.

It is an arithmetic number, because the mean of its divisors is an integer number (7717500).

Almost surely, 2^144540132 is an apocalyptic number.

144540132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144540132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185220000).

144540132 is an abundant number, since it is smaller than the sum of its proper divisors (225899868).

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

144540132 is a wasteful number, since it uses less digits than its factorization.

144540132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7516 (or 7514 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 144540132 is about 12022.4844354235. The cubic root of 144540132 is about 524.8028066678.

Adding to 144540132 its reverse (231045441), we get a palindrome (375585573).

The spelling of 144540132 in words is "one hundred forty-four million, five hundred forty thousand, one hundred thirty-two".