9138642 has 8 divisors (see below), whose sum is σ = 18277296. Its totient is φ = 3046212.

The previous prime is 9138637. The next prime is 9138697. The reversal of 9138642 is 2468319.

9138642 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

9138642 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761548 + ... + 761559.

It is an arithmetic number, because the mean of its divisors is an integer number (2284662).

Almost surely, 2^9138642 is an apocalyptic number.

9138642 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.

9138642 is a wasteful number, since it uses less digits than its factorization.

9138642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523112.

The product of its digits is 10368, while the sum is 33.

The square root of 9138642 is about 3023.0186899852. The cubic root of 9138642 is about 209.0710441230.

The spelling of 9138642 in words is "nine million, one hundred thirty-eight thousand, six hundred forty-two".