642962329 has 2 divisors, whose sum is σ = 642962330. Its totient is φ = 642962328.

The previous prime is 642962293. The next prime is 642962339. The reversal of 642962329 is 923269246.

642962329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (642962293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 554508304 + 88454025 = 23548^2 + 9405^2 .

It is a cyclic number.

It is not a de Polignac number, because 642962329 - 2¹⁵ = 642929561 is a prime.

It is not a weakly prime, because it can be changed into another prime (642962339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321481164 + 321481165.

It is an arithmetic number, because the mean of its divisors is an integer number (321481165).

Almost surely, 2^642962329 is an apocalyptic number.

It is an amenable number.

642962329 is a deficient number, since it is larger than the sum of its proper divisors (1).

642962329 is an equidigital number, since it uses as much as digits as its factorization.

642962329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 642962329 is about 25356.7018557225. The cubic root of 642962329 is about 863.1014432467.

The spelling of 642962329 in words is "six hundred forty-two million, nine hundred sixty-two thousand, three hundred twenty-nine".