144121140 has 48 divisors (see below), whose sum is σ = 448378560. Its totient is φ = 38432160.

The previous prime is 144121093. The next prime is 144121141. The reversal of 144121140 is 41121441.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144121141) 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 15 ways as a sum of consecutive naturals, for example, 132906 + ... + 133985.

It is an arithmetic number, because the mean of its divisors is an integer number (9341220).

Almost surely, 2^144121140 is an apocalyptic number.

144121140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144121140 is an abundant number, since it is smaller than the sum of its proper divisors (304257420).

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

144121140 is a wasteful number, since it uses less digits than its factorization.

144121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266909 (or 266901 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 144121140 is about 12005.0464388939. The cubic root of 144121140 is about 524.2952175586.

Adding to 144121140 its reverse (41121441), we get a palindrome (185242581).

The spelling of 144121140 in words is "one hundred forty-four million, one hundred twenty-one thousand, one hundred forty".