144085013 has 4 divisors (see below), whose sum is σ = 152560620. Its totient is φ = 135609408.

The previous prime is 144084977. The next prime is 144085031. The reversal of 144085013 is 310580441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310580441 = 19 ⋅16346339.

It can be written as a sum of positive squares in 2 ways, for example, as 66961489 + 77123524 = 8183^2 + 8782^2 .

It is not a de Polignac number, because 144085013 - 2⁸ = 144084757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144085043) 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, 4237778 + ... + 4237811.

It is an arithmetic number, because the mean of its divisors is an integer number (38140155).

Almost surely, 2^144085013 is an apocalyptic number.

It is an amenable number.

144085013 is a deficient number, since it is larger than the sum of its proper divisors (8475607).

144085013 is an equidigital number, since it uses as much as digits as its factorization.

144085013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8475606.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 144085013 is about 12003.5416856859. The cubic root of 144085013 is about 524.2514053503.

The spelling of 144085013 in words is "one hundred forty-four million, eighty-five thousand, thirteen".