21434041342 has 16 divisors (see below), whose sum is σ = 36748729440. Its totient is φ = 9184853088.

The previous prime is 21434041327. The next prime is 21434041357. The reversal of 21434041342 is 24314043412.

It is an interprime number because it is at equal distance from previous prime (21434041327) and next prime (21434041357).

It is a self number, because there is not a number n which added to its sum of digits gives 21434041342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22384 + ... + 208252.

It is an arithmetic number, because the mean of its divisors is an integer number (2296795590).

Almost surely, 2^21434041342 is an apocalyptic number.

21434041342 is a deficient number, since it is larger than the sum of its proper divisors (15314688098).

21434041342 is a wasteful number, since it uses less digits than its factorization.

21434041342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194115.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21434041342 its reverse (24314043412), we get a palindrome (45748084754).

The spelling of 21434041342 in words is "twenty-one billion, four hundred thirty-four million, forty-one thousand, three hundred forty-two".