42521015541 has 24 divisors (see below), whose sum is σ = 57889357344. Its totient is φ = 27761316000.

The previous prime is 42521015539. The next prime is 42521015609. The reversal of 42521015541 is 14551012524.

It is not a de Polignac number, because 42521015541 - 2¹ = 42521015539 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42521015499 and 42521015508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521015521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2320666 + ... + 2338916.

It is an arithmetic number, because the mean of its divisors is an integer number (2412056556).

Almost surely, 2^42521015541 is an apocalyptic number.

It is an amenable number.

42521015541 is a deficient number, since it is larger than the sum of its proper divisors (15368341803).

42521015541 is a wasteful number, since it uses less digits than its factorization.

42521015541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18561 (or 18494 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 42521015541 in words is "forty-two billion, five hundred twenty-one million, fifteen thousand, five hundred forty-one".