154039 has 4 divisors (see below), whose sum is σ = 159040. Its totient is φ = 149040.

The previous prime is 154027. The next prime is 154043. The reversal of 154039 is 930451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930451 = 839 ⋅1109.

It is a cyclic number.

It is not a de Polignac number, because 154039 - 2⁷ = 153911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2454 + ... + 2515.

It is an arithmetic number, because the mean of its divisors is an integer number (39760).

2¹⁵⁴⁰³⁹ is an apocalyptic number.

154039 is a deficient number, since it is larger than the sum of its proper divisors (5001).

154039 is an equidigital number, since it uses as much as digits as its factorization.

154039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 154039 is about 392.4780248625. The cubic root of 154039 is about 53.6056084946.

The spelling of 154039 in words is "one hundred fifty-four thousand, thirty-nine".