242407783 has 4 divisors (see below), whose sum is σ = 242543448. Its totient is φ = 242272120.

The previous prime is 242407729. The next prime is 242407801. The reversal of 242407783 is 387704242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387704242 = 2 ⋅193852121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242407783 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 (242407883) 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, 65116 + ... + 68737.

It is an arithmetic number, because the mean of its divisors is an integer number (60635862).

Almost surely, 2^242407783 is an apocalyptic number.

242407783 is a deficient number, since it is larger than the sum of its proper divisors (135665).

242407783 is a wasteful number, since it uses less digits than its factorization.

242407783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135664.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 242407783 is about 15569.4503114272. The cubic root of 242407783 is about 623.5177958521.

It can be divided in two parts, 24240 and 7783, that added together give a palindrome (32023).

The spelling of 242407783 in words is "two hundred forty-two million, four hundred seven thousand, seven hundred eighty-three".