2190642 has 8 divisors (see below), whose sum is σ = 4381296. Its totient is φ = 730212.

The previous prime is 2190613. The next prime is 2190647. The reversal of 2190642 is 2460912.

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

2190642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2190647) 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, 182548 + ... + 182559.

It is an arithmetic number, because the mean of its divisors is an integer number (547662).

2^2190642 is an apocalyptic number.

2190642 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.

2190642 is a wasteful number, since it uses less digits than its factorization.

2190642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365112.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2190642 is about 1480.0817544987. The cubic root of 2190642 is about 129.8744744947.

The spelling of 2190642 in words is "two million, one hundred ninety thousand, six hundred forty-two".