100120003 has 2 divisors, whose sum is σ = 100120004. Its totient is φ = 100120002.

The previous prime is 100119997. The next prime is 100120037. The reversal of 100120003 is 300021001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100120003 - 2²¹ = 98022851 is a prime.

It is not a weakly prime, because it can be changed into another prime (100126003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060001 + 50060002.

It is an arithmetic number, because the mean of its divisors is an integer number (50060002).

Almost surely, 2^100120003 is an apocalyptic number.

100120003 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120003 is an equidigital number, since it uses as much as digits as its factorization.

100120003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 100120003 is about 10005.9983509893. The cubic root of 100120003 is about 464.3444773366.

Adding to 100120003 its reverse (300021001), we get a palindrome (400141004).

The spelling of 100120003 in words is "one hundred million, one hundred twenty thousand, three".