2187642 has 8 divisors (see below), whose sum is σ = 4375296. Its totient is φ = 729212.

The previous prime is 2187629. The next prime is 2187667. The reversal of 2187642 is 2467812.

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

2187642 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, 182298 + ... + 182309.

It is an arithmetic number, because the mean of its divisors is an integer number (546912).

2^2187642 is an apocalyptic number.

2187642 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.

2187642 is a wasteful number, since it uses less digits than its factorization.

2187642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364612.

The product of its digits is 5376, while the sum is 30.

The square root of 2187642 is about 1479.0679497575. The cubic root of 2187642 is about 129.8151613775.

The spelling of 2187642 in words is "two million, one hundred eighty-seven thousand, six hundred forty-two".