109154 has 4 divisors (see below), whose sum is σ = 163734. Its totient is φ = 54576.

The previous prime is 109147. The next prime is 109159. The reversal of 109154 is 451901.

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

It can be written as a sum of positive squares in only one way, i.e., 93025 + 16129 = 305^2 + 127^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109159) by changing a digit.

109154 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27287 + ... + 27290.

2¹⁰⁹¹⁵⁴ is an apocalyptic number.

109154 is a deficient number, since it is larger than the sum of its proper divisors (54580).

109154 is an equidigital number, since it uses as much as digits as its factorization.

109154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54579.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 109154 is about 330.3846243396. The cubic root of 109154 is about 47.7910477332.

It can be divided in two parts, 10915 and 4, that multiplied together give a triangular number (43660 = T₂₉₅).

The spelling of 109154 in words is "one hundred nine thousand, one hundred fifty-four".