144123540 has 96 divisors (see below), whose sum is σ = 443681280. Its totient is φ = 34665600.

The previous prime is 144123521. The next prime is 144123559. The reversal of 144123540 is 45321441.

It is an interprime number because it is at equal distance from previous prime (144123521) and next prime (144123559).

It is a self number, because there is not a number n which added to its sum of digits gives 144123540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90955 + ... + 92525.

It is an arithmetic number, because the mean of its divisors is an integer number (4621680).

Almost surely, 2^144123540 is an apocalyptic number.

144123540 is a gapful number since it is divisible by the number (10) 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 144123540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221840640).

144123540 is an abundant number, since it is smaller than the sum of its proper divisors (299557740).

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

144123540 is a wasteful number, since it uses less digits than its factorization.

144123540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1731 counting only the distinct ones).

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

The square root of 144123540 is about 12005.1463964418. The cubic root of 144123540 is about 524.2981278454.

Adding to 144123540 its reverse (45321441), we get a palindrome (189444981).

The spelling of 144123540 in words is "one hundred forty-four million, one hundred twenty-three thousand, five hundred forty".