99942401 has 8 divisors (see below), whose sum is σ = 109455360.
Its totient is φ = 90690192.
The previous prime is 99942397. The next prime is 99942407. The reversal of 99942401 is 10424999.
It is a happy number.
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 99942401 - 22 = 99942397 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (99942407) 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, 64385 + ... + 65918.
It is an arithmetic number, because the mean of its divisors is an integer number (13681920).
It is a Proth number, since it is equal to 1525 ⋅ 216 + 1 and 1525 < 216.
Almost surely, 299942401 is an apocalyptic number.
It is an amenable number.
99942401 is a deficient number, since it is larger than the sum of its proper divisors (9512959).
99942401 is a wasteful number, since it uses less digits than its factorization.
99942401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 130375.
The product of its (nonzero) digits is 23328, while the sum is 38.
The square root of 99942401 is about 9997.1196351749.
The cubic root of 99942401 is about 464.0697492872.
The spelling of 99942401 in words is "ninety-nine million, nine hundred forty-two thousand, four hundred one".