109740 has 48 divisors (see below), whose sum is σ = 322560. Its totient is φ = 27840.

The previous prime is 109721. The next prime is 109741. The reversal of 109740 is 47901.

Added to its reverse (47901) it gives a triangular number (157641 = T₅₆₁).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109740.

It is not an unprimeable number, because it can be changed into a prime (109741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1831 + ... + 1889.

It is an arithmetic number, because the mean of its divisors is an integer number (6720).

2¹⁰⁹⁷⁴⁰ is an apocalyptic number.

109740 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 109740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161280).

109740 is an abundant number, since it is smaller than the sum of its proper divisors (212820).

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

109740 is a wasteful number, since it uses less digits than its factorization.

109740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 109740 is about 331.2702823979. The cubic root of 109740 is about 47.8764182079.

Adding to 109740 its reverse (47901), we get a triangular number (157641 = T₅₆₁).

The spelling of 109740 in words is "one hundred nine thousand, seven hundred forty".