30423042100 has 108 divisors (see below), whose sum is σ = 73050192544. Its totient is φ = 10989000000.

The previous prime is 30423042071. The next prime is 30423042109. The reversal of 30423042100 is 124032403.

It is a super-2 number, since 2×30423042100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30423042109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1818775 + ... + 1835425.

Almost surely, 2^30423042100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30423042100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36525096272).

30423042100 is an abundant number, since it is smaller than the sum of its proper divisors (42627150444).

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

30423042100 is a wasteful number, since it uses less digits than its factorization.

30423042100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16838 (or 16820 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 30423042100 its reverse (124032403), we get a palindrome (30547074503).

The spelling of 30423042100 in words is "thirty billion, four hundred twenty-three million, forty-two thousand, one hundred".