242130401 has 4 divisors (see below), whose sum is σ = 242170032. Its totient is φ = 242090772.

The previous prime is 242130389. The next prime is 242130419. The reversal of 242130401 is 104031242.

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 a de Polignac number, because none of the positive numbers 2^k-242130401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242130401.

It is not an unprimeable number, because it can be changed into a prime (242130451) 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, 8495 + ... + 23588.

It is an arithmetic number, because the mean of its divisors is an integer number (60542508).

Almost surely, 2^242130401 is an apocalyptic number.

It is an amenable number.

242130401 is a deficient number, since it is larger than the sum of its proper divisors (39631).

242130401 is an equidigital number, since it uses as much as digits as its factorization.

242130401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39630.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 242130401 is about 15560.5398685264. The cubic root of 242130401 is about 623.2798790909.

Adding to 242130401 its reverse (104031242), we get a palindrome (346161643).

The spelling of 242130401 in words is "two hundred forty-two million, one hundred thirty thousand, four hundred one".