642741283 has 2 divisors, whose sum is σ = 642741284. Its totient is φ = 642741282.

The previous prime is 642741223. The next prime is 642741289. The reversal of 642741283 is 382147246.

642741283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 642741283 - 2¹⁷ = 642610211 is a prime.

It is not a weakly prime, because it can be changed into another prime (642741289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321370641 + 321370642.

It is an arithmetic number, because the mean of its divisors is an integer number (321370642).

Almost surely, 2^642741283 is an apocalyptic number.

642741283 is a deficient number, since it is larger than the sum of its proper divisors (1).

642741283 is an equidigital number, since it uses as much as digits as its factorization.

642741283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 642741283 is about 25352.3427517064. The cubic root of 642741283 is about 863.0025224750.

The spelling of 642741283 in words is "six hundred forty-two million, seven hundred forty-one thousand, two hundred eighty-three".