2189542 has 8 divisors (see below), whose sum is σ = 3354336. Its totient is φ = 1071432.

The previous prime is 2189533. The next prime is 2189543. The reversal of 2189542 is 2459812.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189543) 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, 11553 + ... + 11740.

It is an arithmetic number, because the mean of its divisors is an integer number (419292).

2^2189542 is an apocalyptic number.

2189542 is a deficient number, since it is larger than the sum of its proper divisors (1164794).

2189542 is a wasteful number, since it uses less digits than its factorization.

2189542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23342.

The product of its digits is 5760, while the sum is 31.

The square root of 2189542 is about 1479.7101067439. The cubic root of 2189542 is about 129.8527326430.

The spelling of 2189542 in words is "two million, one hundred eighty-nine thousand, five hundred forty-two".