249424243 has 2 divisors, whose sum is σ = 249424244. Its totient is φ = 249424242.

The previous prime is 249424139. The next prime is 249424271. The reversal of 249424243 is 342424942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249424243 - 2¹³ = 249416051 is a prime.

It is a super-2 number, since 2×249424243² = 124424905992246098, which contains 22 as substring.

It is equal to p_13649560 and since 249424243 and 13649560 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 249424199 and 249424208.

It is not a weakly prime, because it can be changed into another prime (249424843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124712121 + 124712122.

It is an arithmetic number, because the mean of its divisors is an integer number (124712122).

Almost surely, 2^249424243 is an apocalyptic number.

249424243 is a deficient number, since it is larger than the sum of its proper divisors (1).

249424243 is an equidigital number, since it uses as much as digits as its factorization.

249424243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 34.

The square root of 249424243 is about 15793.1707709377. The cubic root of 249424243 is about 629.4765476434.

The spelling of 249424243 in words is "two hundred forty-nine million, four hundred twenty-four thousand, two hundred forty-three".