242207129 has 4 divisors (see below), whose sum is σ = 242445840. Its totient is φ = 241968420.

The previous prime is 242207081. The next prime is 242207153. The reversal of 242207129 is 921702242.

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 not a de Polignac number, because 242207129 - 2¹² = 242203033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242207179) 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, 117827 + ... + 119864.

It is an arithmetic number, because the mean of its divisors is an integer number (60611460).

Almost surely, 2^242207129 is an apocalyptic number.

It is an amenable number.

242207129 is a deficient number, since it is larger than the sum of its proper divisors (238711).

242207129 is a wasteful number, since it uses less digits than its factorization.

242207129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238710.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 242207129 is about 15563.0051403962. The cubic root of 242207129 is about 623.3457085885.

The spelling of 242207129 in words is "two hundred forty-two million, two hundred seven thousand, one hundred twenty-nine".