100202103 has 10 divisors (see below), whose sum is σ = 149684744. Its totient is φ = 66801348.

The previous prime is 100202101. The next prime is 100202117. The reversal of 100202103 is 301202001.

It is a happy number.

It is not a de Polignac number, because 100202103 - 2¹ = 100202101 is a prime.

It is a super-2 number, since 2×100202103² = 20080922891245218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 618451 + ... + 618612.

Almost surely, 2^100202103 is an apocalyptic number.

100202103 is a deficient number, since it is larger than the sum of its proper divisors (49482641).

100202103 is an equidigital number, since it uses as much as digits as its factorization.

100202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237075 (or 1237066 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100202103 is about 10010.1000494501. The cubic root of 100202103 is about 464.4713659528.

Adding to 100202103 its reverse (301202001), we get a palindrome (401404104).

The spelling of 100202103 in words is "one hundred million, two hundred two thousand, one hundred three".