249759942 has 16 divisors (see below), whose sum is σ = 499839552. Its totient is φ = 83200040.

The previous prime is 249759941. The next prime is 249759947. The reversal of 249759942 is 249957942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249759941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2484 + ... + 22487.

It is an arithmetic number, because the mean of its divisors is an integer number (31239972).

Almost surely, 2^249759942 is an apocalyptic number.

249759942 is an abundant number, since it is smaller than the sum of its proper divisors (250079610).

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

249759942 is a wasteful number, since it uses less digits than its factorization.

249759942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26643.

The product of its digits is 1632960, while the sum is 51.

The square root of 249759942 is about 15803.7951771086. The cubic root of 249759942 is about 629.7588242889.

The spelling of 249759942 in words is "two hundred forty-nine million, seven hundred fifty-nine thousand, nine hundred forty-two".