145714321 has 4 divisors (see below), whose sum is σ = 145851700. Its totient is φ = 145576944.

The previous prime is 145714297. The next prime is 145714379. The reversal of 145714321 is 123417541.

145714321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35569296 + 110145025 = 5964^2 + 10495^2 .

It is a cyclic number.

It is not a de Polignac number, because 145714321 - 2⁷ = 145714193 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 145714321.

It is not an unprimeable number, because it can be changed into a prime (145714381) 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, 67086 + ... + 69223.

It is an arithmetic number, because the mean of its divisors is an integer number (36462925).

Almost surely, 2^145714321 is an apocalyptic number.

It is an amenable number.

145714321 is a deficient number, since it is larger than the sum of its proper divisors (137379).

145714321 is a wasteful number, since it uses less digits than its factorization.

145714321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137378.

The product of its digits is 3360, while the sum is 28.

The square root of 145714321 is about 12071.2187040083. The cubic root of 145714321 is about 526.2200751805.

The spelling of 145714321 in words is "one hundred forty-five million, seven hundred fourteen thousand, three hundred twenty-one".