109487742 has 64 divisors (see below), whose sum is σ = 271165440. Its totient is φ = 28698624.

The previous prime is 109487723. The next prime is 109487743. The reversal of 109487742 is 247784901.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 109487694 and 109487703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109487743) 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, 104859 + ... + 105897.

It is an arithmetic number, because the mean of its divisors is an integer number (4236960).

Almost surely, 2^109487742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109487742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135582720).

109487742 is an abundant number, since it is smaller than the sum of its proper divisors (161677698).

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

109487742 is a wasteful number, since it uses less digits than its factorization.

109487742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 109487742 is about 10463.6390419395. The cubic root of 109487742 is about 478.3970575046.

The spelling of 109487742 in words is "one hundred nine million, four hundred eighty-seven thousand, seven hundred forty-two".