144235240 has 16 divisors (see below), whose sum is σ = 324529380. Its totient is φ = 57694080.

The previous prime is 144235229. The next prime is 144235243. The reversal of 144235240 is 42532441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 144144036 + 91204 = 12006^2 + 302^2 .

It is not an unprimeable number, because it can be changed into a prime (144235243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802901 + ... + 1802980.

Almost surely, 2^144235240 is an apocalyptic number.

144235240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144235240 is an abundant number, since it is smaller than the sum of its proper divisors (180294140).

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

144235240 is a wasteful number, since it uses less digits than its factorization.

144235240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605892 (or 3605888 counting only the distinct ones).

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

The square root of 144235240 is about 12009.7976669051. The cubic root of 144235240 is about 524.4335417127.

Adding to 144235240 its reverse (42532441), we get a palindrome (186767681).

The spelling of 144235240 in words is "one hundred forty-four million, two hundred thirty-five thousand, two hundred forty".