42520561245044 has 6 divisors (see below), whose sum is σ = 74410982178834. Its totient is φ = 21260280622520.

The previous prime is 42520561245037. The next prime is 42520561245061. The reversal of 42520561245044 is 44054216502524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24910200784144 + 17610360460900 = 4991012^2 + 4196470^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42520561244986 and 42520561245004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5315070155627 + ... + 5315070155634.

It is an arithmetic number, because the mean of its divisors is an integer number (12401830363139).

Almost surely, 2^{42520561245044} is an apocalyptic number.

It is an amenable number.

42520561245044 is a deficient number, since it is larger than the sum of its proper divisors (31890420933790).

42520561245044 is a wasteful number, since it uses less digits than its factorization.

42520561245044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10630140311265 (or 10630140311263 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 44.

Adding to 42520561245044 its reverse (44054216502524), we get a palindrome (86574777747568).

The spelling of 42520561245044 in words is "forty-two trillion, five hundred twenty billion, five hundred sixty-one million, two hundred forty-five thousand, forty-four".