21141042043 has 8 divisors (see below), whose sum is σ = 24065692416. Its totient is φ = 18383514600.

The previous prime is 21141042031. The next prime is 21141042049. The reversal of 21141042043 is 34024014112.

It is a happy number.

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

It is not a de Polignac number, because 21141042043 - 2²⁹ = 20604171131 is a prime.

It is a super-2 number, since 2×21141042043² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21141042049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41780463 + ... + 41780968.

It is an arithmetic number, because the mean of its divisors is an integer number (3008211552).

Almost surely, 2^21141042043 is an apocalyptic number.

21141042043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21141042043 is a deficient number, since it is larger than the sum of its proper divisors (2924650373).

21141042043 is a wasteful number, since it uses less digits than its factorization.

21141042043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83561465.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21141042043 its reverse (34024014112), we get a palindrome (55165056155).

The spelling of 21141042043 in words is "twenty-one billion, one hundred forty-one million, forty-two thousand, forty-three".