148239 has 24 divisors (see below), whose sum is σ = 264992. Its totient is φ = 77760.

The previous prime is 148229. The next prime is 148243. The reversal of 148239 is 932841.

148239 = T₉₁ + T₉₂ + ... + T₁₁₇.

It is not a de Polignac number, because 148239 - 2⁵ = 148207 is a prime.

It is a super-2 number, since 2×148239² = 43949602242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

148239 is a lucky number.

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 148239.

It is not an unprimeable number, because it can be changed into a prime (148229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729 + ... + 909.

148239 is a Friedman number, since it can be written as ((31+2)^4-9)/8, using all its digits and the basic arithmetic operations.

2¹⁴⁸²³⁹ is an apocalyptic number.

148239 is a deficient number, since it is larger than the sum of its proper divisors (116753).

148239 is a wasteful number, since it uses less digits than its factorization.

148239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 204 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 148239 is about 385.0181813889. The cubic root of 148239 is about 52.9241825630.

It can be divided in two parts, 1482 and 39, that added together give a square (1521 = 39²).

The spelling of 148239 in words is "one hundred forty-eight thousand, two hundred thirty-nine".