42749049259 has 48 divisors (see below), whose sum is σ = 53480939520. Its totient is φ = 33432989760.

The previous prime is 42749049251. The next prime is 42749049271. The reversal of 42749049259 is 95294094724.

It is not a de Polignac number, because 42749049259 - 2³ = 42749049251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42749049251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17937982 + ... + 17940364.

It is an arithmetic number, because the mean of its divisors is an integer number (1114186240).

Almost surely, 2^42749049259 is an apocalyptic number.

42749049259 is a deficient number, since it is larger than the sum of its proper divisors (10731890261).

42749049259 is a wasteful number, since it uses less digits than its factorization.

42749049259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688 (or 2669 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 42749049259 in words is "forty-two billion, seven hundred forty-nine million, forty-nine thousand, two hundred fifty-nine".