21434142033123 has 32 divisors (see below), whose sum is σ = 29114451125760. Its totient is φ = 14024393809920.

The previous prime is 21434142033121. The next prime is 21434142033127. The reversal of 21434142033123 is 32133024143412.

It is not a de Polignac number, because 21434142033123 - 2¹ = 21434142033121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21434142033121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30784065 + ... + 31472637.

It is an arithmetic number, because the mean of its divisors is an integer number (909826597680).

Almost surely, 2^{21434142033123} is an apocalyptic number.

21434142033123 is a deficient number, since it is larger than the sum of its proper divisors (7680309092637).

21434142033123 is a wasteful number, since it uses less digits than its factorization.

21434142033123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689579.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 21434142033123 its reverse (32133024143412), we get a palindrome (53567166176535).

The spelling of 21434142033123 in words is "twenty-one trillion, four hundred thirty-four billion, one hundred forty-two million, thirty-three thousand, one hundred twenty-three".