442100022 has 32 divisors (see below), whose sum is σ = 1088247552. Its totient is φ = 116597664.

The previous prime is 442100003. The next prime is 442100051. The reversal of 442100022 is 220001244.

It is a junction number, because it is equal to n+sod(n) for n = 442099974 and 442100010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404308 + ... + 405399.

It is an arithmetic number, because the mean of its divisors is an integer number (34007736).

Almost surely, 2^442100022 is an apocalyptic number.

442100022 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

442100022 is an abundant number, since it is smaller than the sum of its proper divisors (646147530).

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

442100022 is a wasteful number, since it uses less digits than its factorization.

442100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809732.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 442100022 is about 21026.1746877553. The cubic root of 442100022 is about 761.7986151569.

Adding to 442100022 its reverse (220001244), we get a palindrome (662101266).

The spelling of 442100022 in words is "four hundred forty-two million, one hundred thousand, twenty-two".