242121316 has 12 divisors (see below), whose sum is σ = 424102140. Its totient is φ = 120949280.

The previous prime is 242121311. The next prime is 242121323. The reversal of 242121316 is 613121242.

It can be written as a sum of positive squares in 2 ways, for example, as 94012416 + 148108900 = 9696^2 + 12170^2 .

It is not an unprimeable number, because it can be changed into a prime (242121311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22855 + ... + 31726.

It is an arithmetic number, because the mean of its divisors is an integer number (35341845).

Almost surely, 2^242121316 is an apocalyptic number.

It is an amenable number.

242121316 is a deficient number, since it is larger than the sum of its proper divisors (181980824).

242121316 is a wasteful number, since it uses less digits than its factorization.

242121316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55694 (or 55692 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 242121316 is about 15560.2479414693. The cubic root of 242121316 is about 623.2720836103.

Adding to 242121316 its reverse (613121242), we get a palindrome (855242558).

The spelling of 242121316 in words is "two hundred forty-two million, one hundred twenty-one thousand, three hundred sixteen".