442442111 has 8 divisors (see below), whose sum is σ = 457473744.
Its totient is φ = 427612480.
The previous prime is 442442101. The next prime is 442442131. The reversal of 442442111 is 111244244.
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 442442111 - 214 = 442425727 is a prime.
It is a super-2 number, since 2×4424421112 = 391510043172272642, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (442442101) 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, 46040 + ... + 54813.
It is an arithmetic number, because the mean of its divisors is an integer number (57184218).
Almost surely, 2442442111 is an apocalyptic number.
442442111 is a gapful number since it is divisible by the number (41) formed by its first and last digit.
442442111 is a deficient number, since it is larger than the sum of its proper divisors (15031633).
442442111 is a wasteful number, since it uses less digits than its factorization.
442442111 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 101001.
The product of its digits is 1024, while the sum is 23.
The square root of 442442111 is about 21034.3079515348.
The cubic root of 442442111 is about 761.9950531617.
Adding to 442442111 its reverse (111244244), we get a palindrome (553686355).
The spelling of 442442111 in words is "four hundred forty-two million, four hundred forty-two thousand, one hundred eleven".