242500521 has 8 divisors (see below), whose sum is σ = 330853600. Its totient is φ = 157907232.

The previous prime is 242500513. The next prime is 242500547. The reversal of 242500521 is 125005242.

It is a happy number.

242500521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242500521 - 2³ = 242500513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242501521) 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, 939796 + ... + 940053.

It is an arithmetic number, because the mean of its divisors is an integer number (41356700).

Almost surely, 2^242500521 is an apocalyptic number.

It is an amenable number.

242500521 is a deficient number, since it is larger than the sum of its proper divisors (88353079).

242500521 is a wasteful number, since it uses less digits than its factorization.

242500521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879895.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 242500521 is about 15572.4282306903. The cubic root of 242500521 is about 623.5972988289.

Adding to 242500521 its reverse (125005242), we get a palindrome (367505763).

The spelling of 242500521 in words is "two hundred forty-two million, five hundred thousand, five hundred twenty-one".