42442000400242 has 8 divisors (see below), whose sum is σ = 63663184929132. Its totient is φ = 21220938757200.

The previous prime is 42442000400227. The next prime is 42442000400243. The reversal of 42442000400242 is 24200400024424.

It can be written as a sum of positive squares in 2 ways, for example, as 41968228367521 + 473772032721 = 6478289^2 + 688311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×42442000400242³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42442000400242.

It is not an unprimeable number, because it can be changed into a prime (42442000400243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29853109 + ... + 31242472.

Almost surely, 2^{42442000400242} is an apocalyptic number.

42442000400242 is a deficient number, since it is larger than the sum of its proper divisors (21221184528890).

42442000400242 is a wasteful number, since it uses less digits than its factorization.

42442000400242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61442924.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 42442000400242 its reverse (24200400024424), we get a palindrome (66642400424666).

The spelling of 42442000400242 in words is "forty-two trillion, four hundred forty-two billion, four hundred thousand, two hundred forty-two".