242121242 has 48 divisors (see below), whose sum is σ = 426179880. Its totient is φ = 102727680.

The previous prime is 242121239. The next prime is 242121247.

242121242 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 214358881 + 27762361 = 14641^2 + 5269^2 .

It is not an unprimeable number, because it can be changed into a prime (242121247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 941978 + ... + 942234.

Almost surely, 2^242121242 is an apocalyptic number.

242121242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

242121242 is a deficient number, since it is larger than the sum of its proper divisors (184058638).

242121242 is a wasteful number, since it uses less digits than its factorization.

242121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 516 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 242121242 is about 15560.2455636150. The cubic root of 242121242 is about 623.2720201130.

The spelling of 242121242 in words is "two hundred forty-two million, one hundred twenty-one thousand, two hundred forty-two".