144857071 has 4 divisors (see below), whose sum is σ = 144884200. Its totient is φ = 144829944.

The previous prime is 144857021. The next prime is 144857077. The reversal of 144857071 is 170758441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144857071 - 2⁹ = 144856559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144857071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144857077) 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, 2601 + ... + 17218.

It is an arithmetic number, because the mean of its divisors is an integer number (36221050).

Almost surely, 2^144857071 is an apocalyptic number.

144857071 is a deficient number, since it is larger than the sum of its proper divisors (27129).

144857071 is an equidigital number, since it uses as much as digits as its factorization.

144857071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27128.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 144857071 is about 12035.6583118665. The cubic root of 144857071 is about 525.1861120957.

The spelling of 144857071 in words is "one hundred forty-four million, eight hundred fifty-seven thousand, seventy-one".