145720 has 16 divisors (see below), whose sum is σ = 327960. Its totient is φ = 58272.

The previous prime is 145709. The next prime is 145721. The reversal of 145720 is 27541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145721) 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, 1782 + ... + 1861.

2¹⁴⁵⁷²⁰ is an apocalyptic number.

145720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145720 is an abundant number, since it is smaller than the sum of its proper divisors (182240).

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

145720 is a wasteful number, since it uses less digits than its factorization.

145720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654 (or 3650 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 145720 is about 381.7328909067. The cubic root of 145720 is about 52.6226911308.

The spelling of 145720 in words is "one hundred forty-five thousand, seven hundred twenty".