249750942 has 96 divisors (see below), whose sum is σ = 610237440. Its totient is φ = 67858560.

The previous prime is 249750913. The next prime is 249750979. The reversal of 249750942 is 249057942.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 249750894 and 249750903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 610434 + ... + 610842.

It is an arithmetic number, because the mean of its divisors is an integer number (6356640).

Almost surely, 2^249750942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249750942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305118720).

249750942 is an abundant number, since it is smaller than the sum of its proper divisors (360486498).

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

249750942 is a wasteful number, since it uses less digits than its factorization.

249750942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 249750942 is about 15803.5104328121. The cubic root of 249750942 is about 629.7512598286.

The spelling of 249750942 in words is "two hundred forty-nine million, seven hundred fifty thousand, nine hundred forty-two".