100040023 has 2 divisors, whose sum is σ = 100040024. Its totient is φ = 100040022.

The previous prime is 100040011. The next prime is 100040051. The reversal of 100040023 is 320040001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100040023 - 2²⁵ = 66485591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100039991 and 100040009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100040063) 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 as a sum of consecutive naturals, namely, 50020011 + 50020012.

It is an arithmetic number, because the mean of its divisors is an integer number (50020012).

Almost surely, 2^100040023 is an apocalyptic number.

100040023 is a deficient number, since it is larger than the sum of its proper divisors (1).

100040023 is an equidigital number, since it uses as much as digits as its factorization.

100040023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 100040023 is about 10002.0009498100. Note that the first 3 decimals coincide. The cubic root of 100040023 is about 464.2207985385.

Adding to 100040023 its reverse (320040001), we get a palindrome (420080024).

The spelling of 100040023 in words is "one hundred million, forty thousand, twenty-three".