242540429 has 2 divisors, whose sum is σ = 242540430. Its totient is φ = 242540428.

The previous prime is 242540423. The next prime is 242540443. The reversal of 242540429 is 924045242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230128900 + 12411529 = 15170^2 + 3523^2 .

It is a cyclic number.

It is not a de Polignac number, because 242540429 - 2⁴ = 242540413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242540395 and 242540404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242540423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121270214 + 121270215.

It is an arithmetic number, because the mean of its divisors is an integer number (121270215).

Almost surely, 2^242540429 is an apocalyptic number.

It is an amenable number.

242540429 is a deficient number, since it is larger than the sum of its proper divisors (1).

242540429 is an equidigital number, since it uses as much as digits as its factorization.

242540429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 242540429 is about 15573.7095452561. The cubic root of 242540429 is about 623.6315051553.

The spelling of 242540429 in words is "two hundred forty-two million, five hundred forty thousand, four hundred twenty-nine".