100172423 has 8 divisors (see below), whose sum is σ = 108192000. Its totient is φ = 92197728.

The previous prime is 100172419. The next prime is 100172441. The reversal of 100172423 is 324271001.

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 100172423 - 2² = 100172419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100172395 and 100172404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100172473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6503 + ... + 15576.

It is an arithmetic number, because the mean of its divisors is an integer number (13524000).

Almost surely, 2^100172423 is an apocalyptic number.

100172423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100172423 is a deficient number, since it is larger than the sum of its proper divisors (8019577).

100172423 is a wasteful number, since it uses less digits than its factorization.

100172423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22441.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 100172423 is about 10008.6174369890. The cubic root of 100172423 is about 464.4255024062.

The spelling of 100172423 in words is "one hundred million, one hundred seventy-two thousand, four hundred twenty-three".