110042421 has 4 divisors (see below), whose sum is σ = 146723232.
Its totient is φ = 73361612.
The previous prime is 110042333. The next prime is 110042431. The reversal of 110042421 is 124240011.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 110042421 - 27 = 110042293 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 110042421.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (110042431) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18340401 + ... + 18340406.
It is an arithmetic number, because the mean of its divisors is an integer number (36680808).
Almost surely, 2110042421 is an apocalyptic number.
It is an amenable number.
110042421 is a deficient number, since it is larger than the sum of its proper divisors (36680811).
110042421 is an equidigital number, since it uses as much as digits as its factorization.
110042421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36680810.
The product of its (nonzero) digits is 64, while the sum is 15.
The square root of 110042421 is about 10490.1106285873.
The cubic root of 110042421 is about 479.2035707666.
Adding to 110042421 its reverse (124240011), we get a palindrome (234282432).
The spelling of 110042421 in words is "one hundred ten million, forty-two thousand, four hundred twenty-one".