242991574 has 16 divisors (see below), whose sum is σ = 441060768. Its totient is φ = 98013312.

The previous prime is 242991571. The next prime is 242991577. The reversal of 242991574 is 475199242.

It is an interprime number because it is at equal distance from previous prime (242991571) and next prime (242991577).

It is a self number, because there is not a number n which added to its sum of digits gives 242991574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242991571) 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 7 ways as a sum of consecutive naturals, for example, 510249 + ... + 510724.

It is an arithmetic number, because the mean of its divisors is an integer number (27566298).

Almost surely, 2^242991574 is an apocalyptic number.

242991574 is a deficient number, since it is larger than the sum of its proper divisors (198069194).

242991574 is a wasteful number, since it uses less digits than its factorization.

242991574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020999.

The product of its digits is 181440, while the sum is 43.

The square root of 242991574 is about 15588.1870017010. The cubic root of 242991574 is about 624.0179341629.

The spelling of 242991574 in words is "two hundred forty-two million, nine hundred ninety-one thousand, five hundred seventy-four".