145712 has 20 divisors (see below), whose sum is σ = 322896. Its totient is φ = 62400.

The previous prime is 145709. The next prime is 145721. The reversal of 145712 is 217541.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539 + ... + 762.

2¹⁴⁵⁷¹² is an apocalyptic number.

It is an amenable number.

145712 is an abundant number, since it is smaller than the sum of its proper divisors (177184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145712 is a wasteful number, since it uses less digits than its factorization.

145712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1310 counting only the distinct ones).

The product of its digits is 280, while the sum is 20.

The square root of 145712 is about 381.7224122317. The cubic root of 145712 is about 52.6217281213.

The spelling of 145712 in words is "one hundred forty-five thousand, seven hundred twelve".