100442403 has 16 divisors (see below), whose sum is σ = 155274240. Its totient is φ = 64049832.

The previous prime is 100442371. The next prime is 100442413. The reversal of 100442403 is 304244001.

It is not a de Polignac number, because 100442403 - 2⁵ = 100442371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100442413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80251 + ... + 81492.

It is an arithmetic number, because the mean of its divisors is an integer number (9704640).

Almost surely, 2^100442403 is an apocalyptic number.

100442403 is a deficient number, since it is larger than the sum of its proper divisors (54831837).

100442403 is a wasteful number, since it uses less digits than its factorization.

100442403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161775 (or 161769 counting only the distinct ones).

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

The square root of 100442403 is about 10022.0957389161. The cubic root of 100442403 is about 464.8423607168.

Adding to 100442403 its reverse (304244001), we get a palindrome (404686404).

The spelling of 100442403 in words is "one hundred million, four hundred forty-two thousand, four hundred three".