442040022 has 12 divisors (see below), whose sum is σ = 957753420. Its totient is φ = 147346668.

The previous prime is 442040009. The next prime is 442040023. The reversal of 442040022 is 220040244.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 24557779 = 442040022 / (4 + 4 + 2 + 0 + 4 + 0 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 442039977 and 442040004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442040023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12278872 + ... + 12278907.

It is an arithmetic number, because the mean of its divisors is an integer number (79812785).

Almost surely, 2^442040022 is an apocalyptic number.

442040022 is an abundant number, since it is smaller than the sum of its proper divisors (515713398).

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

442040022 is a wasteful number, since it uses less digits than its factorization.

442040022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24557787 (or 24557784 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 442040022 is about 21024.7478462882. The cubic root of 442040022 is about 761.7641508709.

Adding to 442040022 its reverse (220040244), we get a palindrome (662080266).

The spelling of 442040022 in words is "four hundred forty-two million, forty thousand, twenty-two".