144234440 has 48 divisors (see below), whose sum is σ = 377516700. Its totient is φ = 49451136.

The previous prime is 144234437. The next prime is 144234457. The reversal of 144234440 is 44432441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 142611364 + 1623076 = 11942^2 + 1274^2 .

It is a super-2 number, since 2×144234440² = 41607147364227200, which contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 34835 + ... + 38754.

Almost surely, 2^144234440 is an apocalyptic number.

144234440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144234440 is an abundant number, since it is smaller than the sum of its proper divisors (233282260).

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

144234440 is a wasteful number, since it uses less digits than its factorization.

144234440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73614 (or 73603 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 144234440 is about 12009.7643607192. The cubic root of 144234440 is about 524.4325721216.

Adding to 144234440 its reverse (44432441), we get a palindrome (188666881).

The spelling of 144234440 in words is "one hundred forty-four million, two hundred thirty-four thousand, four hundred forty".