144253240 has 32 divisors (see below), whose sum is σ = 338683680. Its totient is φ = 55192192.

The previous prime is 144253237. The next prime is 144253271. The reversal of 144253240 is 42352441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77479 + ... + 79318.

It is an arithmetic number, because the mean of its divisors is an integer number (10583865).

Almost surely, 2^144253240 is an apocalyptic number.

144253240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144253240 is an abundant number, since it is smaller than the sum of its proper divisors (194430440).

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

144253240 is a wasteful number, since it uses less digits than its factorization.

144253240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156831 (or 156827 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144253240 is about 12010.5470316718. The cubic root of 144253240 is about 524.4553565643.

The spelling of 144253240 in words is "one hundred forty-four million, two hundred fifty-three thousand, two hundred forty".