42620329 has 2 divisors, whose sum is σ = 42620330. Its totient is φ = 42620328.

The previous prime is 42620293. The next prime is 42620339. The reversal of 42620329 is 92302624.

Together with previous prime (42620293) 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., 36000000 + 6620329 = 6000^2 + 2573^2 .

It is a cyclic number.

It is not a de Polignac number, because 42620329 - 2⁹ = 42619817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42620297 and 42620306.

It is not a weakly prime, because it can be changed into another prime (42620339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21310164 + 21310165.

It is an arithmetic number, because the mean of its divisors is an integer number (21310165).

Almost surely, 2^42620329 is an apocalyptic number.

It is an amenable number.

42620329 is a deficient number, since it is larger than the sum of its proper divisors (1).

42620329 is an equidigital number, since it uses as much as digits as its factorization.

42620329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 42620329 is about 6528.4246951313. The cubic root of 42620329 is about 349.3056410714.

The spelling of 42620329 in words is "forty-two million, six hundred twenty thousand, three hundred twenty-nine".