144540040 has 32 divisors (see below), whose sum is σ = 332138880. Its totient is φ = 56585152.

The previous prime is 144540037. The next prime is 144540041. The reversal of 144540040 is 40045441.

It is a junction number, because it is equal to n+sod(n) for n = 144539993 and 144540020.

It is not an unprimeable number, because it can be changed into a prime (144540041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36562 + ... + 40321.

It is an arithmetic number, because the mean of its divisors is an integer number (10379340).

Almost surely, 2^144540040 is an apocalyptic number.

144540040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144540040 is an abundant number, since it is smaller than the sum of its proper divisors (187598840).

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

144540040 is a wasteful number, since it uses less digits than its factorization.

144540040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76941 (or 76937 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 144540040 is about 12022.4806092586. The cubic root of 144540040 is about 524.8026953219.

Adding to 144540040 its reverse (40045441), we get a palindrome (184585481).

The spelling of 144540040 in words is "one hundred forty-four million, five hundred forty thousand, forty".