442722042 has 24 divisors (see below), whose sum is σ = 1096264416. Its totient is φ = 126491976.

The previous prime is 442722029. The next prime is 442722047. The reversal of 442722042 is 240227244.

It is a junction number, because it is equal to n+sod(n) for n = 442721997 and 442722015.

It is not an unprimeable number, because it can be changed into a prime (442722047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1756708 + ... + 1756959.

It is an arithmetic number, because the mean of its divisors is an integer number (45677684).

Almost surely, 2^442722042 is an apocalyptic number.

442722042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

442722042 is an abundant number, since it is smaller than the sum of its proper divisors (653542374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442722042 is a wasteful number, since it uses less digits than its factorization.

442722042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513682 (or 3513679 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 442722042 is about 21040.9610521953. The cubic root of 442722042 is about 762.1557228191.

Adding to 442722042 its reverse (240227244), we get a palindrome (682949286).

The spelling of 442722042 in words is "four hundred forty-two million, seven hundred twenty-two thousand, forty-two".