249040754043 has 4 divisors (see below), whose sum is σ = 332054338728. Its totient is φ = 166027169360.

The previous prime is 249040754021. The next prime is 249040754059. The reversal of 249040754043 is 340457040942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249040754043 - 2²⁴ = 249023976827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249040753986 and 249040754004.

It is not an unprimeable number, because it can be changed into a prime (249040754143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41506792338 + ... + 41506792343.

It is an arithmetic number, because the mean of its divisors is an integer number (83013584682).

Almost surely, 2^249040754043 is an apocalyptic number.

249040754043 is a deficient number, since it is larger than the sum of its proper divisors (83013584685).

249040754043 is an equidigital number, since it uses as much as digits as its factorization.

249040754043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83013584684.

The product of its (nonzero) digits is 483840, while the sum is 42.

Adding to 249040754043 its reverse (340457040942), we get a palindrome (589497794985).

The spelling of 249040754043 in words is "two hundred forty-nine billion, forty million, seven hundred fifty-four thousand, forty-three".