42521654541 has 12 divisors (see below), whose sum is σ = 58044710688. Its totient is φ = 27688515624.

The previous prime is 42521654509. The next prime is 42521654569. The reversal of 42521654541 is 14545612524.

It is not a de Polignac number, because 42521654541 - 2⁵ = 42521654509 is a prime.

It is a super-2 number, since 2×42521654541² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42521654541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521654341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3827305 + ... + 3838398.

It is an arithmetic number, because the mean of its divisors is an integer number (4837059224).

Almost surely, 2^42521654541 is an apocalyptic number.

It is an amenable number.

42521654541 is a deficient number, since it is larger than the sum of its proper divisors (15523056147).

42521654541 is an equidigital number, since it uses as much as digits as its factorization.

42521654541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7665792 (or 7665749 counting only the distinct ones).

The product of its digits is 192000, while the sum is 39.

The spelling of 42521654541 in words is "forty-two billion, five hundred twenty-one million, six hundred fifty-four thousand, five hundred forty-one".