2163542 has 4 divisors (see below), whose sum is σ = 3245316. Its totient is φ = 1081770.

The previous prime is 2163527. The next prime is 2163547. The reversal of 2163542 is 2453612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540884 + ... + 540887.

It is an arithmetic number, because the mean of its divisors is an integer number (811329).

2^2163542 is an apocalyptic number.

2163542 is a deficient number, since it is larger than the sum of its proper divisors (1081774).

2163542 is a wasteful number, since it uses less digits than its factorization.

2163542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081773.

The product of its digits is 1440, while the sum is 23.

The square root of 2163542 is about 1470.8983649457. The cubic root of 2163542 is about 129.3367002938.

The spelling of 2163542 in words is "two million, one hundred sixty-three thousand, five hundred forty-two".