442006062440 has 32 divisors (see below), whose sum is σ = 1028807217000. Its totient is φ = 170705789184.

The previous prime is 442006062439. The next prime is 442006062451. The reversal of 442006062440 is 44260600244.

It can be written as a sum of positive squares in 4 ways, for example, as 429179593924 + 12826468516 = 655118^2 + 113254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442006062397 and 442006062406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190518695 + ... + 190521014.

Almost surely, 2^442006062440 is an apocalyptic number.

442006062440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442006062440 is an abundant number, since it is smaller than the sum of its proper divisors (586801154560).

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

442006062440 is a wasteful number, since it uses less digits than its factorization.

442006062440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381039749 (or 381039745 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 442006062440 its reverse (44260600244), we get a palindrome (486266662684).

The spelling of 442006062440 in words is "four hundred forty-two billion, six million, sixty-two thousand, four hundred forty".