249999942 has 8 divisors (see below), whose sum is σ = 499999896. Its totient is φ = 83333312.

The previous prime is 249999941. The next prime is 249999991.

249999942 is nontrivially palindromic in base 10.

249999942 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

249999942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249999941) 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, 20833323 + ... + 20833334.

It is an arithmetic number, because the mean of its divisors is an integer number (62499987).

Almost surely, 2^249999942 is an apocalyptic number.

249999942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

249999942 is a wasteful number, since it uses less digits than its factorization.

249999942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41666662.

The product of its digits is 3779136, while the sum is 57.

The square root of 249999942 is about 15811.3864667207. The cubic root of 249999942 is about 629.9604762305.

The spelling of 249999942 in words is "two hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred forty-two".