249599242 has 16 divisors (see below), whose sum is σ = 378201600. Its totient is φ = 123537600.

The previous prime is 249599239. The next prime is 249599249. The reversal of 249599242 is 242995942.

It is a junction number, because it is equal to n+sod(n) for n = 249599192 and 249599201.

It is not an unprimeable number, because it can be changed into a prime (249599249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110359 + ... + 112597.

It is an arithmetic number, because the mean of its divisors is an integer number (23637600).

Almost surely, 2^249599242 is an apocalyptic number.

249599242 is a deficient number, since it is larger than the sum of its proper divisors (128602358).

249599242 is a wasteful number, since it uses less digits than its factorization.

249599242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781.

The product of its digits is 466560, while the sum is 46.

The square root of 249599242 is about 15798.7101372232. The cubic root of 249599242 is about 629.6237292918.

The spelling of 249599242 in words is "two hundred forty-nine million, five hundred ninety-nine thousand, two hundred forty-two".