144540020 has 24 divisors (see below), whose sum is σ = 303760800. Its totient is φ = 57772832.

The previous prime is 144540013. The next prime is 144540023. The reversal of 144540020 is 20045441.

144540020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 144539974 and 144540001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144540023) 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, 47711 + ... + 50649.

It is an arithmetic number, because the mean of its divisors is an integer number (12656700).

Almost surely, 2^144540020 is an apocalyptic number.

144540020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144540020 is an abundant number, since it is smaller than the sum of its proper divisors (159220780).

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

144540020 is a wasteful number, since it uses less digits than its factorization.

144540020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407 (or 5405 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 144540020 is about 12022.4797774835. The cubic root of 144540020 is about 524.8026711163.

Adding to 144540020 its reverse (20045441), we get a palindrome (164585461).

The spelling of 144540020 in words is "one hundred forty-four million, five hundred forty thousand, twenty".