2102542 has 16 divisors (see below), whose sum is σ = 3422160. Its totient is φ = 963072.

The previous prime is 2102533. The next prime is 2102549. The reversal of 2102542 is 2452012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4809 + ... + 5227.

It is an arithmetic number, because the mean of its divisors is an integer number (213885).

2^2102542 is an apocalyptic number.

2102542 is a deficient number, since it is larger than the sum of its proper divisors (1319618).

2102542 is a wasteful number, since it uses less digits than its factorization.

2102542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2102542 is about 1450.0144826863. The cubic root of 2102542 is about 128.1095660172.

Adding to 2102542 its reverse (2452012), we get a palindrome (4554554).

The spelling of 2102542 in words is "two million, one hundred two thousand, five hundred forty-two".