647093042 has 8 divisors (see below), whose sum is σ = 970747500. Its totient is φ = 323510544.

The previous prime is 647093011. The next prime is 647093047. The reversal of 647093042 is 240390746.

647093042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 639634681 + 7458361 = 25291^2 + 2731^2 .

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 = 647092993 and 647093011.

It is not an unprimeable number, because it can be changed into a prime (647093047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26384 + ... + 44612.

Almost surely, 2^647093042 is an apocalyptic number.

647093042 is a deficient number, since it is larger than the sum of its proper divisors (323654458).

647093042 is a wasteful number, since it uses less digits than its factorization.

647093042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35980.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 647093042 is about 25438.0235474378. The cubic root of 647093042 is about 864.9458315283.

The spelling of 647093042 in words is "six hundred forty-seven million, ninety-three thousand, forty-two".