242970649 has 2 divisors, whose sum is σ = 242970650. Its totient is φ = 242970648.

The previous prime is 242970619. The next prime is 242970667. The reversal of 242970649 is 946079242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231192025 + 11778624 = 15205^2 + 3432^2 .

It is a cyclic number.

It is not a de Polignac number, because 242970649 - 2⁵ = 242970617 is a prime.

It is not a weakly prime, because it can be changed into another prime (242970619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121485324 + 121485325.

It is an arithmetic number, because the mean of its divisors is an integer number (121485325).

Almost surely, 2^242970649 is an apocalyptic number.

It is an amenable number.

242970649 is a deficient number, since it is larger than the sum of its proper divisors (1).

242970649 is an equidigital number, since it uses as much as digits as its factorization.

242970649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 242970649 is about 15587.5158059262. The cubic root of 242970649 is about 624.0000214018. Note that the first 4 decimals are identical.

The spelling of 242970649 in words is "two hundred forty-two million, nine hundred seventy thousand, six hundred forty-nine".