144212440 has 16 divisors (see below), whose sum is σ = 324478080. Its totient is φ = 57684960.

The previous prime is 144212429. The next prime is 144212441. The reversal of 144212440 is 44212441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144212441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802616 + ... + 1802695.

It is an arithmetic number, because the mean of its divisors is an integer number (20279880).

Almost surely, 2^144212440 is an apocalyptic number.

144212440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144212440 is an abundant number, since it is smaller than the sum of its proper divisors (180265640).

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

144212440 is a wasteful number, since it uses less digits than its factorization.

144212440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605322 (or 3605318 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 144212440 is about 12008.8484044058. The cubic root of 144212440 is about 524.4059069616.

Adding to 144212440 its reverse (44212441), we get a palindrome (188424881).

Subtracting from 144212440 its reverse (44212441), we obtain a palindrome (99999999).

It can be divided in two parts, 14421 and 2440, that added together give a palindrome (16861).

The spelling of 144212440 in words is "one hundred forty-four million, two hundred twelve thousand, four hundred forty".