144540840 has 32 divisors (see below), whose sum is σ = 433622880. Its totient is φ = 38544192.

The previous prime is 144540829. The next prime is 144540853. The reversal of 144540840 is 48045441.

144540840 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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 144540798 and 144540807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602134 + ... + 602373.

It is an arithmetic number, because the mean of its divisors is an integer number (13550715).

Almost surely, 2^144540840 is an apocalyptic number.

144540840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144540840 is an abundant number, since it is smaller than the sum of its proper divisors (289082040).

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

144540840 is a wasteful number, since it uses less digits than its factorization.

144540840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204521 (or 1204517 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 144540840 is about 12022.5138802166. The cubic root of 144540840 is about 524.8036635458.

The spelling of 144540840 in words is "one hundred forty-four million, five hundred forty thousand, eight hundred forty".