642542359 has 2 divisors, whose sum is σ = 642542360. Its totient is φ = 642542358.

The previous prime is 642542347. The next prime is 642542371. The reversal of 642542359 is 953245246.

642542359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (642542347) and next prime (642542371).

It is a cyclic number.

It is not a de Polignac number, because 642542359 - 2⁷ = 642542231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642542339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321271179 + 321271180.

It is an arithmetic number, because the mean of its divisors is an integer number (321271180).

Almost surely, 2^642542359 is an apocalyptic number.

642542359 is a deficient number, since it is larger than the sum of its proper divisors (1).

642542359 is an equidigital number, since it uses as much as digits as its factorization.

642542359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 40.

The square root of 642542359 is about 25348.4192603799. The cubic root of 642542359 is about 862.9134821764.

It can be divided in two parts, 6425 and 42359, that added together give a palindrome (48784).

The spelling of 642542359 in words is "six hundred forty-two million, five hundred forty-two thousand, three hundred fifty-nine".