42521440505 has 16 divisors (see below), whose sum is σ = 52400709648. Its totient is φ = 33104640000.

The previous prime is 42521440459. The next prime is 42521440517. The reversal of 42521440505 is 50504412524.

It can be written as a sum of positive squares in 8 ways, for example, as 1301477776 + 41219962729 = 36076^2 + 203027^2 .

It is not a de Polignac number, because 42521440505 - 2⁶ = 42521440441 is a prime.

It is a Duffinian number.

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, 176426 + ... + 340835.

It is an arithmetic number, because the mean of its divisors is an integer number (3275044353).

Almost surely, 2^42521440505 is an apocalyptic number.

It is an amenable number.

42521440505 is a deficient number, since it is larger than the sum of its proper divisors (9879269143).

42521440505 is a wasteful number, since it uses less digits than its factorization.

42521440505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517708.

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 42521440505 in words is "forty-two billion, five hundred twenty-one million, four hundred forty thousand, five hundred five".