109142946 has 48 divisors (see below), whose sum is σ = 259691328. Its totient is φ = 32853600.

The previous prime is 109142927. The next prime is 109142959. The reversal of 109142946 is 649241901.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 109142946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29331 + ... + 32841.

It is an arithmetic number, because the mean of its divisors is an integer number (5410236).

Almost surely, 2^109142946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109142946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129845664).

109142946 is an abundant number, since it is smaller than the sum of its proper divisors (150548382).

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

109142946 is a wasteful number, since it uses less digits than its factorization.

109142946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687 (or 3684 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 109142946 is about 10447.1501377170. The cubic root of 109142946 is about 477.8943441601.

The spelling of 109142946 in words is "one hundred nine million, one hundred forty-two thousand, nine hundred forty-six".