249586742 has 4 divisors (see below), whose sum is σ = 374380116. Its totient is φ = 124793370.

The previous prime is 249586739. The next prime is 249586747. The reversal of 249586742 is 247685942.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249586747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62396684 + ... + 62396687.

It is an arithmetic number, because the mean of its divisors is an integer number (93595029).

Almost surely, 2^249586742 is an apocalyptic number.

249586742 is a deficient number, since it is larger than the sum of its proper divisors (124793374).

249586742 is a wasteful number, since it uses less digits than its factorization.

249586742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124793373.

The product of its digits is 967680, while the sum is 47.

The square root of 249586742 is about 15798.3145303542. The cubic root of 249586742 is about 629.6132185387.

The spelling of 249586742 in words is "two hundred forty-nine million, five hundred eighty-six thousand, seven hundred forty-two".