242208749 has 2 divisors, whose sum is σ = 242208750. Its totient is φ = 242208748.

The previous prime is 242208721. The next prime is 242208763. The reversal of 242208749 is 947802242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215355625 + 26853124 = 14675^2 + 5182^2 .

It is a cyclic number.

It is not a de Polignac number, because 242208749 - 2¹² = 242204653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242208779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121104374 + 121104375.

It is an arithmetic number, because the mean of its divisors is an integer number (121104375).

Almost surely, 2^242208749 is an apocalyptic number.

It is an amenable number.

242208749 is a deficient number, since it is larger than the sum of its proper divisors (1).

242208749 is an equidigital number, since it uses as much as digits as its factorization.

242208749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 242208749 is about 15563.0571868126. The cubic root of 242208749 is about 623.3470983326.

The spelling of 242208749 in words is "two hundred forty-two million, two hundred eight thousand, seven hundred forty-nine".