2100423042 has 32 divisors (see below), whose sum is σ = 4818178560. Its totient is φ = 677555280.

The previous prime is 2100423041. The next prime is 2100423047. The reversal of 2100423042 is 2403240012.

2100423042 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2100423041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625693 + ... + 629040.

It is an arithmetic number, because the mean of its divisors is an integer number (150568080).

Almost surely, 2^2100423042 is an apocalyptic number.

2100423042 is an abundant number, since it is smaller than the sum of its proper divisors (2717755518).

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

2100423042 is a wasteful number, since it uses less digits than its factorization.

2100423042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254775 (or 1254769 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2100423042 is about 45830.3724837580. The cubic root of 2100423042 is about 1280.6651494951.

Adding to 2100423042 its reverse (2403240012), we get a palindrome (4503663054).

The spelling of 2100423042 in words is "two billion, one hundred million, four hundred twenty-three thousand, forty-two".