5640349742 has 8 divisors (see below), whose sum is σ = 8462988000. Its totient is φ = 2819353744.

The previous prime is 5640349721. The next prime is 5640349789. The reversal of 5640349742 is 2479430465.

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 = 5640349693 and 5640349702.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 401942 + ... + 415737.

It is an arithmetic number, because the mean of its divisors is an integer number (1057873500).

Almost surely, 2^5640349742 is an apocalyptic number.

5640349742 is a deficient number, since it is larger than the sum of its proper divisors (2822638258).

5640349742 is a wasteful number, since it uses less digits than its factorization.

5640349742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821130.

The product of its (nonzero) digits is 725760, while the sum is 44.

The square root of 5640349742 is about 75102.2618966966. The cubic root of 5640349742 is about 1780.0628835673.

The spelling of 5640349742 in words is "five billion, six hundred forty million, three hundred forty-nine thousand, seven hundred forty-two".