109242140 has 48 divisors (see below), whose sum is σ = 270649344. Its totient is φ = 36244800.

The previous prime is 109242137. The next prime is 109242143. The reversal of 109242140 is 41242901.

It is an interprime number because it is at equal distance from previous prime (109242137) and next prime (109242143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109242143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8246 + ... + 16925.

It is an arithmetic number, because the mean of its divisors is an integer number (5638528).

Almost surely, 2^109242140 is an apocalyptic number.

109242140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109242140 is an abundant number, since it is smaller than the sum of its proper divisors (161407204).

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

109242140 is a wasteful number, since it uses less digits than its factorization.

109242140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25218 (or 25216 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 109242140 is about 10451.8964786301. The cubic root of 109242140 is about 478.0390775870.

The spelling of 109242140 in words is "one hundred nine million, two hundred forty-two thousand, one hundred forty".