1865242 has 8 divisors (see below), whose sum is σ = 2857536. Its totient is φ = 912732.

The previous prime is 1865233. The next prime is 1865243. The reversal of 1865242 is 2425681.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1865242.

It is not an unprimeable number, because it can be changed into a prime (1865243) 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 3 ways as a sum of consecutive naturals, for example, 9828 + ... + 10015.

It is an arithmetic number, because the mean of its divisors is an integer number (357192).

2^1865242 is an apocalyptic number.

1865242 is a deficient number, since it is larger than the sum of its proper divisors (992294).

1865242 is a wasteful number, since it uses less digits than its factorization.

1865242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19892.

The product of its digits is 3840, while the sum is 28.

The square root of 1865242 is about 1365.7386279959. The cubic root of 1865242 is about 123.0963177969.

The spelling of 1865242 in words is "one million, eight hundred sixty-five thousand, two hundred forty-two".