100243242 has 48 divisors (see below), whose sum is σ = 240982560. Its totient is φ = 29858400.

The previous prime is 100243229. The next prime is 100243261. The reversal of 100243242 is 242342001.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7392 + ... + 15972.

It is an arithmetic number, because the mean of its divisors is an integer number (5020470).

Almost surely, 2^100243242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100243242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120491280).

100243242 is an abundant number, since it is smaller than the sum of its proper divisors (140739318).

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

100243242 is a wasteful number, since it uses less digits than its factorization.

100243242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659 (or 8656 counting only the distinct ones).

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

The square root of 100243242 is about 10012.1547131474. The cubic root of 100243242 is about 464.5349217485.

Adding to 100243242 its reverse (242342001), we get a palindrome (342585243).

It can be divided in two parts, 1002 and 43242, that added together give a palindrome (44244).

The spelling of 100243242 in words is "one hundred million, two hundred forty-three thousand, two hundred forty-two".