9128742 has 16 divisors (see below), whose sum is σ = 20865792. Its totient is φ = 2608200.

The previous prime is 9128741. The next prime is 9128747. The reversal of 9128742 is 2478219.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9128741) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 108634 + ... + 108717.

It is an arithmetic number, because the mean of its divisors is an integer number (1304112).

Almost surely, 2^9128742 is an apocalyptic number.

9128742 is an abundant number, since it is smaller than the sum of its proper divisors (11737050).

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

9128742 is a wasteful number, since it uses less digits than its factorization.

9128742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217363.

The product of its digits is 8064, while the sum is 33.

The square root of 9128742 is about 3021.3808101595. The cubic root of 9128742 is about 208.9955204583.

It can be divided in two parts, 9128 and 742, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 9128742 in words is "nine million, one hundred twenty-eight thousand, seven hundred forty-two".