144000013 has 4 divisors (see below), whose sum is σ = 152470620. Its totient is φ = 135529408.

The previous prime is 144000001. The next prime is 144000023. The reversal of 144000013 is 310000441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310000441 = 139 ⋅2230219.

It can be written as a sum of positive squares in 2 ways, for example, as 59028489 + 84971524 = 7683^2 + 9218^2 .

It is a cyclic number.

It is not a de Polignac number, because 144000013 - 2¹⁷ = 143868941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143999957 and 144000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144000023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4235278 + ... + 4235311.

It is an arithmetic number, because the mean of its divisors is an integer number (38117655).

Almost surely, 2^144000013 is an apocalyptic number.

It is an amenable number.

144000013 is a deficient number, since it is larger than the sum of its proper divisors (8470607).

144000013 is an equidigital number, since it uses as much as digits as its factorization.

144000013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8470606.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 144000013 is about 12000.0005416667. Note that the first 3 decimals coincide. The cubic root of 144000013 is about 524.1482946148.

Subtracting from 144000013 its sum of digits (13), we obtain a square (144000000 = 12000²).

Adding to 144000013 its reverse (310000441), we get a palindrome (454000454).

The spelling of 144000013 in words is "one hundred forty-four million, thirteen", and thus it is an aban number.