242421242 has 16 divisors (see below), whose sum is σ = 433648512. Its totient is φ = 99377520.

The previous prime is 242421227. The next prime is 242421269. The reversal of 242421242 is 242124242.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376109 + ... + 376752.

It is an arithmetic number, because the mean of its divisors is an integer number (27103032).

Almost surely, 2^242421242 is an apocalyptic number.

242421242 is a deficient number, since it is larger than the sum of its proper divisors (191227270).

242421242 is a wasteful number, since it uses less digits than its factorization.

242421242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752893.

The product of its digits is 2048, while the sum is 23.

The square root of 242421242 is about 15569.8825300643. The cubic root of 242421242 is about 623.5293353203.

Adding to 242421242 its reverse (242124242), we get a palindrome (484545484).

The spelling of 242421242 in words is "two hundred forty-two million, four hundred twenty-one thousand, two hundred forty-two".