42857329 has 2 divisors, whose sum is σ = 42857330. Its totient is φ = 42857328.

The previous prime is 42857267. The next prime is 42857333. The reversal of 42857329 is 92375824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 16386304 = 5145^2 + 4048^2 .

It is a cyclic number.

It is not a de Polignac number, because 42857329 - 2⁷ = 42857201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42857291 and 42857300.

It is not a weakly prime, because it can be changed into another prime (42857029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21428664 + 21428665.

It is an arithmetic number, because the mean of its divisors is an integer number (21428665).

Almost surely, 2^42857329 is an apocalyptic number.

It is an amenable number.

42857329 is a deficient number, since it is larger than the sum of its proper divisors (1).

42857329 is an equidigital number, since it uses as much as digits as its factorization.

42857329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 42857329 is about 6546.5509239599. The cubic root of 42857329 is about 349.9519090387.

The spelling of 42857329 in words is "forty-two million, eight hundred fifty-seven thousand, three hundred twenty-nine".