242992129 has 4 divisors (see below), whose sum is σ = 244053460. Its totient is φ = 241930800.

The previous prime is 242992111. The next prime is 242992147. The reversal of 242992129 is 921299242.

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

It is an interprime number because it is at equal distance from previous prime (242992111) and next prime (242992147).

It can be written as a sum of positive squares in 2 ways, for example, as 213832129 + 29160000 = 14623^2 + 5400^2 .

It is a cyclic number.

It is not a de Polignac number, because 242992129 - 2¹⁷ = 242861057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242992091 and 242992100.

It is not an unprimeable number, because it can be changed into a prime (242992109) 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, 530322 + ... + 530779.

It is an arithmetic number, because the mean of its divisors is an integer number (61013365).

Almost surely, 2^242992129 is an apocalyptic number.

It is an amenable number.

242992129 is a deficient number, since it is larger than the sum of its proper divisors (1061331).

242992129 is a wasteful number, since it uses less digits than its factorization.

242992129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061330.

The product of its digits is 46656, while the sum is 40.

The square root of 242992129 is about 15588.2048036328. The cubic root of 242992129 is about 624.0184092544.

The spelling of 242992129 in words is "two hundred forty-two million, nine hundred ninety-two thousand, one hundred twenty-nine".