249932742 has 32 divisors (see below), whose sum is σ = 531295200. Its totient is φ = 78110208.

The previous prime is 249932719. The next prime is 249932747. The reversal of 249932742 is 247239942.

It is a junction number, because it is equal to n+sod(n) for n = 249932694 and 249932703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249932747) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22884 + ... + 31992.

It is an arithmetic number, because the mean of its divisors is an integer number (16602975).

Almost surely, 2^249932742 is an apocalyptic number.

249932742 is an abundant number, since it is smaller than the sum of its proper divisors (281362458).

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

249932742 is a wasteful number, since it uses less digits than its factorization.

249932742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9400.

The product of its digits is 217728, while the sum is 42.

The square root of 249932742 is about 15809.2612730640. The cubic root of 249932742 is about 629.9040267005.

The spelling of 249932742 in words is "two hundred forty-nine million, nine hundred thirty-two thousand, seven hundred forty-two".