249144904042 has 16 divisors (see below), whose sum is σ = 376188080040. Its totient is φ = 123750067392.

The previous prime is 249144904033. The next prime is 249144904061. The reversal of 249144904042 is 240409441942.

It can be written as a sum of positive squares in 4 ways, for example, as 247306295401 + 1838608641 = 497299^2 + 42879^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 249144904042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122884 + ... + 716512.

Almost surely, 2^249144904042 is an apocalyptic number.

249144904042 is a deficient number, since it is larger than the sum of its proper divisors (127043175998).

249144904042 is a wasteful number, since it uses less digits than its factorization.

249144904042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595017.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 249144904042 in words is "two hundred forty-nine billion, one hundred forty-four million, nine hundred four thousand, forty-two".