249242242 has 8 divisors (see below), whose sum is σ = 375066432. Its totient is φ = 124220100.

The previous prime is 249242183. The next prime is 249242251. The reversal of 249242242 is 242242942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 199734 + ... + 200977.

It is an arithmetic number, because the mean of its divisors is an integer number (46883304).

Almost surely, 2^249242242 is an apocalyptic number.

249242242 is a deficient number, since it is larger than the sum of its proper divisors (125824190).

249242242 is a wasteful number, since it uses less digits than its factorization.

249242242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401024.

The product of its digits is 18432, while the sum is 31.

The square root of 249242242 is about 15787.4077036099. The cubic root of 249242242 is about 629.3234039652.

The spelling of 249242242 in words is "two hundred forty-nine million, two hundred forty-two thousand, two hundred forty-two".