5242942521 has 12 divisors (see below), whose sum is σ = 7575862320. Its totient is φ = 3494038200.

The previous prime is 5242942499. The next prime is 5242942553. The reversal of 5242942521 is 1252492425.

5242942521 is a `hidden beast` number, since 5 + 2 + 42 + 94 + 2 + 521 = 666.

It is not a de Polignac number, because 5242942521 - 2¹⁴ = 5242926137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5242942321) 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, 77955 + ... + 128696.

It is an arithmetic number, because the mean of its divisors is an integer number (631321860).

Almost surely, 2^5242942521 is an apocalyptic number.

It is an amenable number.

5242942521 is a deficient number, since it is larger than the sum of its proper divisors (2332919799).

5242942521 is a wasteful number, since it uses less digits than its factorization.

5242942521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209476 (or 209473 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 5242942521 is about 72408.1661209563. The cubic root of 5242942521 is about 1737.2341800337.

The spelling of 5242942521 in words is "five billion, two hundred forty-two million, nine hundred forty-two thousand, five hundred twenty-one".