442505101 has 4 divisors (see below), whose sum is σ = 443556604. Its totient is φ = 441453600.

The previous prime is 442505083. The next prime is 442505111. The reversal of 442505101 is 101505244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43903876 + 398601225 = 6626^2 + 19965^2 .

It is a cyclic number.

It is not a de Polignac number, because 442505101 - 2¹¹ = 442503053 is a prime.

It is a super-2 number, since 2×442505101² = 391621528822040402, 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 (442505111) 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 3 ways as a sum of consecutive naturals, for example, 525120 + ... + 525961.

It is an arithmetic number, because the mean of its divisors is an integer number (110889151).

Almost surely, 2^442505101 is an apocalyptic number.

It is an amenable number.

442505101 is a deficient number, since it is larger than the sum of its proper divisors (1051503).

442505101 is a wasteful number, since it uses less digits than its factorization.

442505101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051502.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 442505101 is about 21035.8052139679. The cubic root of 442505101 is about 762.0312129135.

The spelling of 442505101 in words is "four hundred forty-two million, five hundred five thousand, one hundred one".