42800881 has 2 divisors, whose sum is σ = 42800882. Its totient is φ = 42800880.

The previous prime is 42800851. The next prime is 42800887. The reversal of 42800881 is 18800824.

42800881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41152225 + 1648656 = 6415^2 + 1284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42800881 is a prime.

It is a super-2 number, since 2×42800881² = 3663830828752322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42800887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21400440 + 21400441.

It is an arithmetic number, because the mean of its divisors is an integer number (21400441).

Almost surely, 2^42800881 is an apocalyptic number.

It is an amenable number.

42800881 is a deficient number, since it is larger than the sum of its proper divisors (1).

42800881 is an equidigital number, since it uses as much as digits as its factorization.

42800881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 42800881 is about 6542.2382255616. The cubic root of 42800881 is about 349.7981993157.

It can be divided in two parts, 42800 and 881, that added together give a square (43681 = 209²).

The spelling of 42800881 in words is "forty-two million, eight hundred thousand, eight hundred eighty-one".