144020515 has 8 divisors (see below), whose sum is σ = 182990880. Its totient is φ = 108438912.

The previous prime is 144020509. The next prime is 144020531. The reversal of 144020515 is 515020441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144020515 - 2¹⁵ = 143987747 is a prime.

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, 847095 + ... + 847264.

It is an arithmetic number, because the mean of its divisors is an integer number (22873860).

Almost surely, 2^144020515 is an apocalyptic number.

144020515 is a deficient number, since it is larger than the sum of its proper divisors (38970365).

144020515 is a wasteful number, since it uses less digits than its factorization.

144020515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694381.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 144020515 is about 12000.8547612243. The cubic root of 144020515 is about 524.1731686366.

Adding to 144020515 its reverse (515020441), we get a palindrome (659040956).

The spelling of 144020515 in words is "one hundred forty-four million, twenty thousand, five hundred fifteen".