8921742 has 8 divisors (see below), whose sum is σ = 17843496. Its totient is φ = 2973912.

The previous prime is 8921741. The next prime is 8921761. The reversal of 8921742 is 2471298.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

8921742 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743473 + ... + 743484.

It is an arithmetic number, because the mean of its divisors is an integer number (2230437).

Almost surely, 2^8921742 is an apocalyptic number.

8921742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8921742 is a wasteful number, since it uses less digits than its factorization.

8921742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486962.

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

The square root of 8921742 is about 2986.9285227471. The cubic root of 8921742 is about 207.4037256000.

The spelling of 8921742 in words is "eight million, nine hundred twenty-one thousand, seven hundred forty-two".