2193942 has 16 divisors (see below), whose sum is σ = 4448880. Its totient is φ = 721152.

The previous prime is 2193941. The next prime is 2193943. The reversal of 2193942 is 2493912.

It is an interprime number because it is at equal distance from previous prime (2193941) and next prime (2193943).

It is a d-powerful number, because it can be written as 2⁹ + 1 + 9² + 3¹³ + 9⁶ + 4⁸ + 2¹¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2067 + ... + 2942.

It is an arithmetic number, because the mean of its divisors is an integer number (278055).

2^2193942 is an apocalyptic number.

2193942 is an abundant number, since it is smaller than the sum of its proper divisors (2254938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2193942 is a wasteful number, since it uses less digits than its factorization.

2193942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087.

The product of its digits is 3888, while the sum is 30.

The square root of 2193942 is about 1481.1961382612. The cubic root of 2193942 is about 129.9396564121.

Subtracting from 2193942 its sum of digits (30), we obtain a palindrome (2193912).

The spelling of 2193942 in words is "two million, one hundred ninety-three thousand, nine hundred forty-two".