144201520 has 20 divisors (see below), whose sum is σ = 335268720. Its totient is φ = 57680576.

The previous prime is 144201503. The next prime is 144201587. The reversal of 144201520 is 25102441.

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 901180 + ... + 901339.

It is an arithmetic number, because the mean of its divisors is an integer number (16763436).

Almost surely, 2^144201520 is an apocalyptic number.

144201520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144201520 is an abundant number, since it is smaller than the sum of its proper divisors (191067200).

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

144201520 is a wasteful number, since it uses less digits than its factorization.

144201520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802532 (or 1802526 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 144201520 is about 12008.3937310533. The cubic root of 144201520 is about 524.3926703387.

Adding to 144201520 its reverse (25102441), we get a palindrome (169303961).

The spelling of 144201520 in words is "one hundred forty-four million, two hundred one thousand, five hundred twenty".