100242305 has 8 divisors (see below), whose sum is σ = 122850432. Its totient is φ = 78487408.

The previous prime is 100242301. The next prime is 100242323. The reversal of 100242305 is 503242001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100242305 - 2² = 100242301 is a prime.

It is a super-3 number, since 3×100242305³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100242301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213047 + ... + 213516.

It is an arithmetic number, because the mean of its divisors is an integer number (15356304).

Almost surely, 2^100242305 is an apocalyptic number.

It is an amenable number.

100242305 is a deficient number, since it is larger than the sum of its proper divisors (22608127).

100242305 is an equidigital number, since it uses as much as digits as its factorization.

100242305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426615.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 100242305 is about 10012.1079199138. The cubic root of 100242305 is about 464.5334743672.

Adding to 100242305 its reverse (503242001), we get a palindrome (603484306).

The spelling of 100242305 in words is "one hundred million, two hundred forty-two thousand, three hundred five".