249959142 has 32 divisors (see below), whose sum is σ = 556126560. Its totient is φ = 83220480.

The previous prime is 249959141. The next prime is 249959153. The reversal of 249959142 is 241959942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249959141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53542 + ... + 58022.

It is an arithmetic number, because the mean of its divisors is an integer number (17378955).

Almost surely, 2^249959142 is an apocalyptic number.

249959142 is an abundant number, since it is smaller than the sum of its proper divisors (306167418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249959142 is a wasteful number, since it uses less digits than its factorization.

249959142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525 (or 5519 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 249959142 is about 15810.0962046409. The cubic root of 249959142 is about 629.9262045082.

The spelling of 249959142 in words is "two hundred forty-nine million, nine hundred fifty-nine thousand, one hundred forty-two".