242655613 has 4 divisors (see below), whose sum is σ = 246768480. Its totient is φ = 238542748.

The previous prime is 242655607. The next prime is 242655649. The reversal of 242655613 is 316556242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316556242 = 2 ⋅158278121.

It is a cyclic number.

It is not a de Polignac number, because 242655613 - 2¹³ = 242647421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242655683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056345 + ... + 2056462.

It is an arithmetic number, because the mean of its divisors is an integer number (61692120).

Almost surely, 2^242655613 is an apocalyptic number.

It is an amenable number.

242655613 is a deficient number, since it is larger than the sum of its proper divisors (4112867).

242655613 is an equidigital number, since it uses as much as digits as its factorization.

242655613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112866.

The product of its digits is 43200, while the sum is 34.

The square root of 242655613 is about 15577.4071334096. The cubic root of 242655613 is about 623.7302117275.

The spelling of 242655613 in words is "two hundred forty-two million, six hundred fifty-five thousand, six hundred thirteen".