249338542 has 8 divisors (see below), whose sum is σ = 374634000. Its totient is φ = 124460544.

The previous prime is 249338533. The next prime is 249338623. The reversal of 249338542 is 245833942.

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

It is a junction number, because it is equal to n+sod(n) for n = 249338495 and 249338504.

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 3 ways as a sum of consecutive naturals, for example, 102867 + ... + 105262.

It is an arithmetic number, because the mean of its divisors is an integer number (46829250).

Almost surely, 2^249338542 is an apocalyptic number.

249338542 is a deficient number, since it is larger than the sum of its proper divisors (125295458).

249338542 is a wasteful number, since it uses less digits than its factorization.

249338542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208730.

The product of its digits is 207360, while the sum is 40.

The square root of 249338542 is about 15790.4573081339. The cubic root of 249338542 is about 629.4044443215.

The spelling of 249338542 in words is "two hundred forty-nine million, three hundred thirty-eight thousand, five hundred forty-two".