158078 has 4 divisors (see below), whose sum is σ = 237120. Its totient is φ = 79038.

The previous prime is 158077. The next prime is 158113. The reversal of 158078 is 870851.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 870851 = 353 ⋅2467.

It is a self number, because there is not a number n which added to its sum of digits gives 158078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158071) 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 as a sum of consecutive naturals, namely, 39518 + ... + 39521.

It is an arithmetic number, because the mean of its divisors is an integer number (59280).

2¹⁵⁸⁰⁷⁸ is an apocalyptic number.

158078 is a deficient number, since it is larger than the sum of its proper divisors (79042).

158078 is an equidigital number, since it uses as much as digits as its factorization.

158078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79041.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 158078 is about 397.5902413289. The cubic root of 158078 is about 54.0700964411.

The spelling of 158078 in words is "one hundred fifty-eight thousand, seventy-eight".