43121043213404 has 24 divisors (see below), whose sum is σ = 81270617897280. Its totient is φ = 19901031424704.

The previous prime is 43121043213383. The next prime is 43121043213407. The reversal of 43121043213404 is 40431234012134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43121043213407) 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, 19536659 + ... + 21631530.

It is an arithmetic number, because the mean of its divisors is an integer number (3386275745720).

Almost surely, 2^{43121043213404} is an apocalyptic number.

It is an amenable number.

43121043213404 is a deficient number, since it is larger than the sum of its proper divisors (38149574683876).

43121043213404 is a wasteful number, since it uses less digits than its factorization.

43121043213404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41188349 (or 41188347 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 43121043213404 its reverse (40431234012134), we get a palindrome (83552277225538).

The spelling of 43121043213404 in words is "forty-three trillion, one hundred twenty-one billion, forty-three million, two hundred thirteen thousand, four hundred four".