149223 has 4 divisors (see below), whose sum is σ = 198968. Its totient is φ = 99480.

The previous prime is 149213. The next prime is 149239. The reversal of 149223 is 322941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322941 = 3 ⋅107647.

It is not a de Polignac number, because 149223 - 2⁶ = 149159 is a prime.

It is a D-number.

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 149223.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 149223.

It is not an unprimeable number, because it can be changed into a prime (149213) 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, 24868 + ... + 24873.

It is an arithmetic number, because the mean of its divisors is an integer number (49742).

2¹⁴⁹²²³ is an apocalyptic number.

149223 is a deficient number, since it is larger than the sum of its proper divisors (49745).

149223 is an equidigital number, since it uses as much as digits as its factorization.

149223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49744.

The product of its digits is 432, while the sum is 21.

The square root of 149223 is about 386.2939295407. The cubic root of 149223 is about 53.0410267359.

The spelling of 149223 in words is "one hundred forty-nine thousand, two hundred twenty-three".