2100542 has 8 divisors (see below), whose sum is σ = 3157056. Its totient is φ = 1048192.

The previous prime is 2100541. The next prime is 2100551. The reversal of 2100542 is 2450012.

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

It is a d-powerful number, because it can be written as 2³ + 1 + 0 + 0 + 5⁵ + 4⁴ + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100541) 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, 1118 + ... + 2334.

It is an arithmetic number, because the mean of its divisors is an integer number (394632).

2^2100542 is an apocalyptic number.

2100542 is a deficient number, since it is larger than the sum of its proper divisors (1056514).

2100542 is a wasteful number, since it uses less digits than its factorization.

2100542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2100542 is about 1449.3246703206. The cubic root of 2100542 is about 128.0689325972.

Adding to 2100542 its reverse (2450012), we get a palindrome (4550554).

The spelling of 2100542 in words is "two million, one hundred thousand, five hundred forty-two".