242716649 has 12 divisors (see below), whose sum is σ = 282882564. Its totient is φ = 207645984.

The previous prime is 242716637. The next prime is 242716681. The reversal of 242716649 is 946617242.

It can be written as a sum of positive squares in 2 ways, for example, as 26832400 + 215884249 = 5180^2 + 14693^2 .

It is a de Polignac number, because none of the positive numbers 2^k-242716649 is a prime.

It is a super-2 number, since 2×242716649² = 117822743403578402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242716609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22847 + ... + 31739.

It is an arithmetic number, because the mean of its divisors is an integer number (23573547).

Almost surely, 2^242716649 is an apocalyptic number.

It is an amenable number.

242716649 is a deficient number, since it is larger than the sum of its proper divisors (40165915).

242716649 is an equidigital number, since it uses as much as digits as its factorization.

242716649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464 (or 9457 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 242716649 is about 15579.3661295959. The cubic root of 242716649 is about 623.7825036777.

The spelling of 242716649 in words is "two hundred forty-two million, seven hundred sixteen thousand, six hundred forty-nine".