145923 has 8 divisors (see below), whose sum is σ = 196608. Its totient is φ = 96264.

The previous prime is 145903. The next prime is 145931. The reversal of 145923 is 329541.

It is a Cunningham number, because it is equal to 382²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145923 - 2¹⁰ = 144899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145893 and 145902.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145923.

It is not an unprimeable number, because it can be changed into a prime (145903) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 190 + ... + 572.

It is an arithmetic number, because the mean of its divisors is an integer number (24576).

145923 is a Friedman number, since it can be written as (43*9-5)^2-1, using all its digits and the basic arithmetic operations.

2¹⁴⁵⁹²³ is an apocalyptic number.

145923 is a deficient number, since it is larger than the sum of its proper divisors (50685).

145923 is a wasteful number, since it uses less digits than its factorization.

145923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513.

The product of its digits is 1080, while the sum is 24.

The square root of 145923 is about 381.9986910972. The cubic root of 145923 is about 52.6471157114.

The spelling of 145923 in words is "one hundred forty-five thousand, nine hundred twenty-three".