42444040400042 has 32 divisors (see below), whose sum is σ = 69123738353040. Its totient is φ = 19467190149120.

The previous prime is 42444040399949. The next prime is 42444040400051. The reversal of 42444040400042 is 24000404044424.

It can be written as a sum of positive squares in 8 ways, for example, as 5894023473121 + 36550016926921 = 2427761^2 + 6045661^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42444040399981 and 42444040400008.

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, 13681493 + ... + 16494584.

Almost surely, 2^{42444040400042} is an apocalyptic number.

42444040400042 is a deficient number, since it is larger than the sum of its proper divisors (26679697952998).

42444040400042 is a wasteful number, since it uses less digits than its factorization.

42444040400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30177146.

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

Adding to 42444040400042 its reverse (24000404044424), we get a palindrome (66444444444466).

The spelling of 42444040400042 in words is "forty-two trillion, four hundred forty-four billion, forty million, four hundred thousand, forty-two".