42832813 has 2 divisors, whose sum is σ = 42832814. Its totient is φ = 42832812.

The previous prime is 42832759. The next prime is 42832819. The reversal of 42832813 is 31823824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41757444 + 1075369 = 6462^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 42832813 - 2⁹ = 42832301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42832819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21416406 + 21416407.

It is an arithmetic number, because the mean of its divisors is an integer number (21416407).

Almost surely, 2^42832813 is an apocalyptic number.

It is an amenable number.

42832813 is a deficient number, since it is larger than the sum of its proper divisors (1).

42832813 is an equidigital number, since it uses as much as digits as its factorization.

42832813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 42832813 is about 6544.6782197446. The cubic root of 42832813 is about 349.8851677708.

The spelling of 42832813 in words is "forty-two million, eight hundred thirty-two thousand, eight hundred thirteen".