249426243 has 32 divisors (see below), whose sum is σ = 424339200. Its totient is φ = 143208000.

The previous prime is 249426223. The next prime is 249426253. The reversal of 249426243 is 342624942.

249426243 is a `hidden beast` number, since 24 + 9 + 4 + 2 + 624 + 3 = 666.

It is not a de Polignac number, because 249426243 - 2¹⁷ = 249295171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249426198 and 249426207.

It is not an unprimeable number, because it can be changed into a prime (249426223) 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 31 ways as a sum of consecutive naturals, for example, 16458 + ... + 27743.

It is an arithmetic number, because the mean of its divisors is an integer number (13260600).

Almost surely, 2^249426243 is an apocalyptic number.

249426243 is a deficient number, since it is larger than the sum of its proper divisors (174912957).

249426243 is a wasteful number, since it uses less digits than its factorization.

249426243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44240 (or 44234 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 249426243 is about 15793.2340893181. The cubic root of 249426243 is about 629.4782301178.

The spelling of 249426243 in words is "two hundred forty-nine million, four hundred twenty-six thousand, two hundred forty-three".