442405055240 has 16 divisors (see below), whose sum is σ = 995411374380. Its totient is φ = 176962022080.

The previous prime is 442405055227. The next prime is 442405055263. The reversal of 442405055240 is 42550504244.

It can be written as a sum of positive squares in 2 ways, for example, as 374159762596 + 68245292644 = 611686^2 + 261238^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 442405055240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5530063151 + ... + 5530063230.

Almost surely, 2^442405055240 is an apocalyptic number.

442405055240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442405055240 is an abundant number, since it is smaller than the sum of its proper divisors (553006319140).

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

442405055240 is a wasteful number, since it uses less digits than its factorization.

442405055240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060126392 (or 11060126388 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 35.

Adding to 442405055240 its reverse (42550504244), we get a palindrome (484955559484).

The spelling of 442405055240 in words is "four hundred forty-two billion, four hundred five million, fifty-five thousand, two hundred forty".