2187942 has 8 divisors (see below), whose sum is σ = 4375896. Its totient is φ = 729312.

The previous prime is 2187929. The next prime is 2187943. The reversal of 2187942 is 2497812.

It is a happy number.

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

2187942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187943) 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, 182323 + ... + 182334.

It is an arithmetic number, because the mean of its divisors is an integer number (546987).

2^2187942 is an apocalyptic number.

2187942 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.

2187942 is a wasteful number, since it uses less digits than its factorization.

2187942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364662.

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

The square root of 2187942 is about 1479.1693614999. The cubic root of 2187942 is about 129.8210951285.

The spelling of 2187942 in words is "two million, one hundred eighty-seven thousand, nine hundred forty-two".