100042123 has 8 divisors (see below), whose sum is σ = 102550448. Its totient is φ = 97542144.

The previous prime is 100042121. The next prime is 100042147. The reversal of 100042123 is 321240001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100042123 - 2¹ = 100042121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100042121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27211 + ... + 30667.

It is an arithmetic number, because the mean of its divisors is an integer number (12818806).

Almost surely, 2^100042123 is an apocalyptic number.

100042123 is a deficient number, since it is larger than the sum of its proper divisors (2508325).

100042123 is an equidigital number, since it uses as much as digits as its factorization.

100042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 100042123 is about 10002.1059282533. The cubic root of 100042123 is about 464.2240467614.

Adding to 100042123 its reverse (321240001), we get a palindrome (421282124).

The spelling of 100042123 in words is "one hundred million, forty-two thousand, one hundred twenty-three".