242181873 has 16 divisors (see below), whose sum is σ = 359581440. Its totient is φ = 161097552.

The previous prime is 242181869. The next prime is 242181883. The reversal of 242181873 is 378181242.

242181873 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 242181873 - 2² = 242181869 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242181833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2815 + ... + 22187.

It is an arithmetic number, because the mean of its divisors is an integer number (22473840).

Almost surely, 2^242181873 is an apocalyptic number.

It is an amenable number.

242181873 is a deficient number, since it is larger than the sum of its proper divisors (117399567).

242181873 is a wasteful number, since it uses less digits than its factorization.

242181873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19845 (or 19839 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 242181873 is about 15562.1937078292. The cubic root of 242181873 is about 623.3240415047.

The spelling of 242181873 in words is "two hundred forty-two million, one hundred eighty-one thousand, eight hundred seventy-three".