21014124042434 has 8 divisors (see below), whose sum is σ = 31525129686540. Its totient is φ = 10505747480256.

The previous prime is 21014124042371. The next prime is 21014124042497. The reversal of 21014124042434 is 43424042141012.

It is an interprime number because it is at equal distance from previous prime (21014124042371) and next prime (21014124042497).

It can be written as a sum of positive squares in 2 ways, for example, as 20998875497209 + 15248545225 = 4582453^2 + 123485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21014124042434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657250499 + ... + 657282470.

Almost surely, 2^{21014124042434} is an apocalyptic number.

21014124042434 is a deficient number, since it is larger than the sum of its proper divisors (10511005644106).

21014124042434 is a wasteful number, since it uses less digits than its factorization.

21014124042434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314540964.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 21014124042434 its reverse (43424042141012), we get a palindrome (64438166183446).

The spelling of 21014124042434 in words is "twenty-one trillion, fourteen billion, one hundred twenty-four million, forty-two thousand, four hundred thirty-four".