4242040081544 has 16 divisors (see below), whose sum is σ = 7955301718800. Its totient is φ = 2120626289872.

The previous prime is 4242040081537. The next prime is 4242040081571. The reversal of 4242040081544 is 4451800402424.

It is a junction number, because it is equal to n+sod(n) for n = 4242040081498 and 4242040081507.

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, 49173074 + ... + 49259265.

It is an arithmetic number, because the mean of its divisors is an integer number (497206357425).

Almost surely, 2^{4242040081544} is an apocalyptic number.

It is an amenable number.

4242040081544 is a deficient number, since it is larger than the sum of its proper divisors (3713261637256).

4242040081544 is a wasteful number, since it uses less digits than its factorization.

4242040081544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98437732 (or 98437728 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 38.

Adding to 4242040081544 its reverse (4451800402424), we get a palindrome (8693840483968).

The spelling of 4242040081544 in words is "four trillion, two hundred forty-two billion, forty million, eighty-one thousand, five hundred forty-four".