442244402420 has 48 divisors (see below), whose sum is σ = 1011303014400. Its totient is φ = 161808474240.

The previous prime is 442244402417. The next prime is 442244402423. The reversal of 442244402420 is 24204442244.

It is an interprime number because it is at equal distance from previous prime (442244402417) and next prime (442244402423).

It is a super-2 number, since 2×442244402420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442244402423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20054516 + ... + 20076555.

It is an arithmetic number, because the mean of its divisors is an integer number (21068812800).

Almost surely, 2^442244402420 is an apocalyptic number.

It is an amenable number.

442244402420 is an abundant number, since it is smaller than the sum of its proper divisors (569058611980).

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

442244402420 is a wasteful number, since it uses less digits than its factorization.

442244402420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40131128 (or 40131126 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 442244402420 its reverse (24204442244), we get a palindrome (466448844664).

The spelling of 442244402420 in words is "four hundred forty-two billion, two hundred forty-four million, four hundred two thousand, four hundred twenty".