144020140 has 48 divisors (see below), whose sum is σ = 330783264. Its totient is φ = 52236800.

The previous prime is 144020137. The next prime is 144020183. The reversal of 144020140 is 41020441.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135210 + ... + 136270.

It is an arithmetic number, because the mean of its divisors is an integer number (6891318).

Almost surely, 2^144020140 is an apocalyptic number.

144020140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144020140 is an abundant number, since it is smaller than the sum of its proper divisors (186763124).

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

144020140 is a wasteful number, since it uses less digits than its factorization.

144020140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 144020140 is about 12000.8391373270. The cubic root of 144020140 is about 524.1727136895.

Adding to 144020140 its reverse (41020441), we get a palindrome (185040581).

The spelling of 144020140 in words is "one hundred forty-four million, twenty thousand, one hundred forty".