100240403 has 4 divisors (see below), whose sum is σ = 100715688. Its totient is φ = 99765120.

The previous prime is 100240397. The next prime is 100240421. The reversal of 100240403 is 304042001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100240403 - 2¹² = 100236307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100240423) 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, 237326 + ... + 237747.

It is an arithmetic number, because the mean of its divisors is an integer number (25178922).

Almost surely, 2^100240403 is an apocalyptic number.

100240403 is a deficient number, since it is larger than the sum of its proper divisors (475285).

100240403 is an equidigital number, since it uses as much as digits as its factorization.

100240403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475284.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 100240403 is about 10012.0129344703. The cubic root of 100240403 is about 464.5305363254.

Adding to 100240403 its reverse (304042001), we get a palindrome (404282404).

The spelling of 100240403 in words is "one hundred million, two hundred forty thousand, four hundred three".