242404357 has 4 divisors (see below), whose sum is σ = 261050860. Its totient is φ = 223757856.

The previous prime is 242404303. The next prime is 242404361. The reversal of 242404357 is 753404242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162588001 + 79816356 = 12751^2 + 8934^2 .

It is a cyclic number.

It is not a de Polignac number, because 242404357 - 2¹⁹ = 241880069 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 (242404367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9323232 + ... + 9323257.

It is an arithmetic number, because the mean of its divisors is an integer number (65262715).

Almost surely, 2^242404357 is an apocalyptic number.

It is an amenable number.

242404357 is a deficient number, since it is larger than the sum of its proper divisors (18646503).

242404357 is a wasteful number, since it uses less digits than its factorization.

242404357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18646502.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 242404357 is about 15569.3402878863. The cubic root of 242404357 is about 623.5148584024.

Adding to 242404357 its reverse (753404242), we get a palindrome (995808599).

The spelling of 242404357 in words is "two hundred forty-two million, four hundred four thousand, three hundred fifty-seven".