242423201135405 has 8 divisors (see below), whose sum is σ = 298770215453592. Its totient is φ = 188696978180928.

The previous prime is 242423201135347. The next prime is 242423201135459. The reversal of 242423201135405 is 504531102324242.

It can be written as a sum of positive squares in 4 ways, for example, as 79001059168516 + 163422141966889 = 8888254^2 + 12783667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242423201135405 - 2¹⁰ = 242423201134381 is a prime.

It is a super-2 number, since 2×242423201135405² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655197840722 + ... + 655197841091.

It is an arithmetic number, because the mean of its divisors is an integer number (37346276931699).

Almost surely, 2^{242423201135405} is an apocalyptic number.

It is an amenable number.

242423201135405 is a deficient number, since it is larger than the sum of its proper divisors (56347014318187).

242423201135405 is a wasteful number, since it uses less digits than its factorization.

242423201135405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310395681855.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 242423201135405 its reverse (504531102324242), we get a palindrome (746954303459647).

The spelling of 242423201135405 in words is "two hundred forty-two trillion, four hundred twenty-three billion, two hundred one million, one hundred thirty-five thousand, four hundred five".