242421525 has 24 divisors (see below), whose sum is σ = 445338560. Its totient is φ = 129291120.

The previous prime is 242421497. The next prime is 242421617. The reversal of 242421525 is 525124242.

242421525 is a `hidden beast` number, since 2 + 424 + 215 + 25 = 666.

It is not a de Polignac number, because 242421525 - 2⁸ = 242421269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178897 + ... + 180246.

Almost surely, 2^242421525 is an apocalyptic number.

242421525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

242421525 is a deficient number, since it is larger than the sum of its proper divisors (202917035).

242421525 is a wasteful number, since it uses less digits than its factorization.

242421525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359162 (or 359151 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 242421525 is about 15569.8916181199. The cubic root of 242421525 is about 623.5295779540.

Adding to 242421525 its reverse (525124242), we get a palindrome (767545767).

The spelling of 242421525 in words is "two hundred forty-two million, four hundred twenty-one thousand, five hundred twenty-five".