642854603 has 2 divisors, whose sum is σ = 642854604. Its totient is φ = 642854602.

The previous prime is 642854581. The next prime is 642854651. The reversal of 642854603 is 306458246.

642854603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642854603 - 2¹⁰ = 642853579 is a prime.

It is not a weakly prime, because it can be changed into another prime (642854503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321427301 + 321427302.

It is an arithmetic number, because the mean of its divisors is an integer number (321427302).

Almost surely, 2^642854603 is an apocalyptic number.

642854603 is a deficient number, since it is larger than the sum of its proper divisors (1).

642854603 is an equidigital number, since it uses as much as digits as its factorization.

642854603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 642854603 is about 25354.5775551477. The cubic root of 642854603 is about 863.0532373850.

The spelling of 642854603 in words is "six hundred forty-two million, eight hundred fifty-four thousand, six hundred three".