42821034 has 32 divisors (see below), whose sum is σ = 88102080. Its totient is φ = 13867392.

The previous prime is 42821029. The next prime is 42821057. The reversal of 42821034 is 43012824.

42821034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42820995 and 42821013.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 69094 + ... + 69710.

It is an arithmetic number, because the mean of its divisors is an integer number (2753190).

Almost surely, 2^42821034 is an apocalyptic number.

42821034 is an abundant number, since it is smaller than the sum of its proper divisors (45281046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42821034 is a wasteful number, since it uses less digits than its factorization.

42821034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42821034 is about 6543.7782664146. The cubic root of 42821034 is about 349.8530920875.

Adding to 42821034 its reverse (43012824), we get a palindrome (85833858).

The spelling of 42821034 in words is "forty-two million, eight hundred twenty-one thousand, thirty-four".