109158140 has 96 divisors (see below), whose sum is σ = 289935744. Its totient is φ = 33592320.

The previous prime is 109158121. The next prime is 109158149. The reversal of 109158140 is 41851901.

109158140 = T₂₄₈₀ + T₂₄₈₁ + ... + T₂₅₁₄.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109158149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66530 + ... + 68150.

It is an arithmetic number, because the mean of its divisors is an integer number (3020164).

Almost surely, 2^109158140 is an apocalyptic number.

109158140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109158140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144967872).

109158140 is an abundant number, since it is smaller than the sum of its proper divisors (180777604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109158140 is a wasteful number, since it uses less digits than its factorization.

109158140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 109158140 is about 10447.8772963698. The cubic root of 109158140 is about 477.9165193289.

The spelling of 109158140 in words is "one hundred nine million, one hundred fifty-eight thousand, one hundred forty".