4042540054521 has 8 divisors (see below), whose sum is σ = 5988948228960. Its totient is φ = 2695026702996.

The previous prime is 4042540054493. The next prime is 4042540054523. The reversal of 4042540054521 is 1254500452404.

4042540054521 is a `hidden beast` number, since 4 + 0 + 42 + 5 + 40 + 0 + 54 + 521 = 666.

It is not a de Polignac number, because 4042540054521 - 2⁵ = 4042540054489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4042540054523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74861852835 + ... + 74861852888.

It is an arithmetic number, because the mean of its divisors is an integer number (748618528620).

Almost surely, 2^{4042540054521} is an apocalyptic number.

It is an amenable number.

4042540054521 is a deficient number, since it is larger than the sum of its proper divisors (1946408174439).

4042540054521 is a wasteful number, since it uses less digits than its factorization.

4042540054521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149723705732 (or 149723705726 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

The spelling of 4042540054521 in words is "four trillion, forty-two billion, five hundred forty million, fifty-four thousand, five hundred twenty-one".