2100542442 has 64 divisors (see below), whose sum is σ = 4479356160. Its totient is φ = 655603200.

The previous prime is 2100542441. The next prime is 2100542449. The reversal of 2100542442 is 2442450012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2100542441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 773467 + ... + 776177.

It is an arithmetic number, because the mean of its divisors is an integer number (69989940).

Almost surely, 2^2100542442 is an apocalyptic number.

2100542442 is an abundant number, since it is smaller than the sum of its proper divisors (2378813718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100542442 is a wasteful number, since it uses less digits than its factorization.

2100542442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2100542442 is about 45831.6750948512. The cubic root of 2100542442 is about 1280.6894158005.

Adding to 2100542442 its reverse (2442450012), we get a palindrome (4542992454).

The spelling of 2100542442 in words is "two billion, one hundred million, five hundred forty-two thousand, four hundred forty-two".