42833881 has 2 divisors, whose sum is σ = 42833882. Its totient is φ = 42833880.

The previous prime is 42833867. The next prime is 42833887. The reversal of 42833881 is 18833824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26873856 + 15960025 = 5184^2 + 3995^2 .

It is a cyclic number.

It is not a de Polignac number, because 42833881 - 2⁵ = 42833849 is a prime.

It is a super-2 number, since 2×42833881² = 3669482723044322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42833881.

It is not a weakly prime, because it can be changed into another prime (42833887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21416940 + 21416941.

It is an arithmetic number, because the mean of its divisors is an integer number (21416941).

Almost surely, 2^42833881 is an apocalyptic number.

It is an amenable number.

42833881 is a deficient number, since it is larger than the sum of its proper divisors (1).

42833881 is an equidigital number, since it uses as much as digits as its factorization.

42833881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 42833881 is about 6544.7598122467. The cubic root of 42833881 is about 349.8880757769. Note that the first 3 decimals are identical.

The spelling of 42833881 in words is "forty-two million, eight hundred thirty-three thousand, eight hundred eighty-one".