242987801 has 16 divisors (see below), whose sum is σ = 291650304. Its totient is φ = 197930304.

The previous prime is 242987779. The next prime is 242987803. The reversal of 242987801 is 108789242.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242987801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242987803) 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 15 ways as a sum of consecutive naturals, for example, 20471 + ... + 30083.

It is an arithmetic number, because the mean of its divisors is an integer number (18228144).

Almost surely, 2^242987801 is an apocalyptic number.

It is an amenable number.

242987801 is a deficient number, since it is larger than the sum of its proper divisors (48662503).

242987801 is a wasteful number, since it uses less digits than its factorization.

242987801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9800.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 242987801 is about 15588.0659801016. The cubic root of 242987801 is about 624.0147043776.

The spelling of 242987801 in words is "two hundred forty-two million, nine hundred eighty-seven thousand, eight hundred one".