2189242 has 16 divisors (see below), whose sum is σ = 3608064. Its totient is φ = 988000.

The previous prime is 2189227. The next prime is 2189249. The reversal of 2189242 is 2429812.

It is a d-powerful number, because it can be written as 2³ + 1 + 8 + 9⁵ + 2¹⁵ + 4⁴ + 2²¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2189242.

It is not an unprimeable number, because it can be changed into a prime (2189249) 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, 3942 + ... + 4462.

It is an arithmetic number, because the mean of its divisors is an integer number (225504).

2^2189242 is an apocalyptic number.

2189242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2189242 is a deficient number, since it is larger than the sum of its proper divisors (1418822).

2189242 is a wasteful number, since it uses less digits than its factorization.

2189242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725.

The product of its digits is 2304, while the sum is 28.

The square root of 2189242 is about 1479.6087320640. The cubic root of 2189242 is about 129.8468017833.

The spelling of 2189242 in words is "two million, one hundred eighty-nine thousand, two hundred forty-two".