242116457 has 4 divisors (see below), whose sum is σ = 264127056. Its totient is φ = 220105860.

The previous prime is 242116429. The next prime is 242116463. The reversal of 242116457 is 754611242.

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.

It is a cyclic number.

It is not a de Polignac number, because 242116457 - 2⁶ = 242116393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242116657) 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, 11005283 + ... + 11005304.

It is an arithmetic number, because the mean of its divisors is an integer number (66031764).

Almost surely, 2^242116457 is an apocalyptic number.

It is an amenable number.

242116457 is a deficient number, since it is larger than the sum of its proper divisors (22010599).

242116457 is a wasteful number, since it uses less digits than its factorization.

242116457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22010598.

The product of its digits is 13440, while the sum is 32.

The square root of 242116457 is about 15560.0918056418. The cubic root of 242116457 is about 623.2679142138.

Adding to 242116457 its reverse (754611242), we get a palindrome (996727699).

The spelling of 242116457 in words is "two hundred forty-two million, one hundred sixteen thousand, four hundred fifty-seven".