249693242 has 8 divisors (see below), whose sum is σ = 384662676. Its totient is φ = 121472352.

The previous prime is 249693211. The next prime is 249693259. The reversal of 249693242 is 242396942.

It can be written as a sum of positive squares in 2 ways, for example, as 249355681 + 337561 = 15791^2 + 581^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 249693242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687043 + ... + 1687190.

Almost surely, 2^249693242 is an apocalyptic number.

249693242 is a deficient number, since it is larger than the sum of its proper divisors (134969434).

249693242 is a wasteful number, since it uses less digits than its factorization.

249693242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374272.

The product of its digits is 186624, while the sum is 41.

The square root of 249693242 is about 15801.6847835919. The cubic root of 249693242 is about 629.7027589153.

The spelling of 249693242 in words is "two hundred forty-nine million, six hundred ninety-three thousand, two hundred forty-two".