144145240 has 32 divisors (see below), whose sum is σ = 331231680. Its totient is φ = 56430592.

The previous prime is 144145223. The next prime is 144145241. The reversal of 144145240 is 42541441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144145241) 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, 36457 + ... + 40216.

It is an arithmetic number, because the mean of its divisors is an integer number (10350990).

Almost surely, 2^144145240 is an apocalyptic number.

144145240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144145240 is an abundant number, since it is smaller than the sum of its proper divisors (187086440).

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

144145240 is a wasteful number, since it uses less digits than its factorization.

144145240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76731 (or 76727 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 144145240 is about 12006.0501414912. The cubic root of 144145240 is about 524.3244402216.

Adding to 144145240 its reverse (42541441), we get a palindrome (186686681).

The spelling of 144145240 in words is "one hundred forty-four million, one hundred forty-five thousand, two hundred forty".