642342043 has 8 divisors (see below), whose sum is σ = 736453088. Its totient is φ = 548817984.

The previous prime is 642342011. The next prime is 642342047. The reversal of 642342043 is 340243246.

642342043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642342043 - 2⁵ = 642342011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642342047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144396 + ... + 148777.

It is an arithmetic number, because the mean of its divisors is an integer number (92056636).

Almost surely, 2^642342043 is an apocalyptic number.

642342043 is a deficient number, since it is larger than the sum of its proper divisors (94111045).

642342043 is a wasteful number, since it uses less digits than its factorization.

642342043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293493.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 642342043 is about 25344.4677000721. The cubic root of 642342043 is about 862.8238002327.

Adding to 642342043 its reverse (340243246), we get a palindrome (982585289).

The spelling of 642342043 in words is "six hundred forty-two million, three hundred forty-two thousand, forty-three".