242123216 has 10 divisors (see below), whose sum is σ = 469113762. Its totient is φ = 121061600.

The previous prime is 242123173. The next prime is 242123243. The reversal of 242123216 is 612321242.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 237283216 + 4840000 = 15404^2 + 2200^2 .

It is a junction number, because it is equal to n+sod(n) for n = 242123191 and 242123200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7566335 + ... + 7566366.

Almost surely, 2^242123216 is an apocalyptic number.

It is an amenable number.

242123216 is a deficient number, since it is larger than the sum of its proper divisors (226990546).

242123216 is a wasteful number, since it uses less digits than its factorization.

242123216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15132709 (or 15132703 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 242123216 is about 15560.3089943613. The cubic root of 242123216 is about 623.2737139416.

Adding to 242123216 its reverse (612321242), we get a palindrome (854444458).

The spelling of 242123216 in words is "two hundred forty-two million, one hundred twenty-three thousand, two hundred sixteen".