148139 has 2 divisors, whose sum is σ = 148140. Its totient is φ = 148138.

The previous prime is 148123. The next prime is 148147. The reversal of 148139 is 931841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148139 - 2⁴ = 148123 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 148139.

It is not a weakly prime, because it can be changed into another prime (148199) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74069 + 74070.

It is an arithmetic number, because the mean of its divisors is an integer number (74070).

2¹⁴⁸¹³⁹ is an apocalyptic number.

148139 is a deficient number, since it is larger than the sum of its proper divisors (1).

148139 is an equidigital number, since it uses as much as digits as its factorization.

148139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 148139 is about 384.8882954832. Note that the first 3 decimals coincide. The cubic root of 148139 is about 52.9122792430.

The spelling of 148139 in words is "one hundred forty-eight thousand, one hundred thirty-nine".