100242321 has 4 divisors (see below), whose sum is σ = 133656432. Its totient is φ = 66828212.

The previous prime is 100242301. The next prime is 100242323. The reversal of 100242321 is 123242001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123242001 = 3 ⋅41080667.

It is a cyclic number.

It is not a de Polignac number, because 100242321 - 2⁷ = 100242193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100242321.

It is not an unprimeable number, because it can be changed into a prime (100242323) 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, 16707051 + ... + 16707056.

It is an arithmetic number, because the mean of its divisors is an integer number (33414108).

Almost surely, 2^100242321 is an apocalyptic number.

It is an amenable number.

100242321 is a deficient number, since it is larger than the sum of its proper divisors (33414111).

100242321 is an equidigital number, since it uses as much as digits as its factorization.

100242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33414110.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 100242321 is about 10012.1087189463. The cubic root of 100242321 is about 464.5334990824.

Adding to 100242321 its reverse (123242001), we get a palindrome (223484322).

The spelling of 100242321 in words is "one hundred million, two hundred forty-two thousand, three hundred twenty-one".