109078 has 4 divisors (see below), whose sum is σ = 163620. Its totient is φ = 54538.

The previous prime is 109073. The next prime is 109097. The reversal of 109078 is 870901.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27268 + ... + 27271.

It is an arithmetic number, because the mean of its divisors is an integer number (40905).

2¹⁰⁹⁰⁷⁸ is an apocalyptic number.

109078 is a deficient number, since it is larger than the sum of its proper divisors (54542).

109078 is an equidigital number, since it uses as much as digits as its factorization.

109078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54541.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 109078 is about 330.2695868529. The cubic root of 109078 is about 47.7799534294.

Adding to 109078 its reverse (870901), we get a palindrome (979979).

The spelling of 109078 in words is "one hundred nine thousand, seventy-eight".