21041423034 has 16 divisors (see below), whose sum is σ = 42085173888. Its totient is φ = 7013419712.

The previous prime is 21041423027. The next prime is 21041423089. The reversal of 21041423034 is 43032414012.

It is a junction number, because it is equal to n+sod(n) for n = 21041422995 and 21041423013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34159 + ... + 207965.

It is an arithmetic number, because the mean of its divisors is an integer number (2630323368).

Almost surely, 2^21041423034 is an apocalyptic number.

21041423034 is an abundant number, since it is smaller than the sum of its proper divisors (21043750854).

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

21041423034 is a wasteful number, since it uses less digits than its factorization.

21041423034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193989.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21041423034 its reverse (43032414012), we get a palindrome (64073837046).

The spelling of 21041423034 in words is "twenty-one billion, forty-one million, four hundred twenty-three thousand, thirty-four".