43121201234 has 4 divisors (see below), whose sum is σ = 64681801854. Its totient is φ = 21560600616.

The previous prime is 43121201197. The next prime is 43121201239. The reversal of 43121201234 is 43210212134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30661060609 + 12460140625 = 175103^2 + 111625^2 .

It is not an unprimeable number, because it can be changed into a prime (43121201239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10780300307 + ... + 10780300310.

Almost surely, 2^43121201234 is an apocalyptic number.

43121201234 is a deficient number, since it is larger than the sum of its proper divisors (21560600620).

43121201234 is a wasteful number, since it uses less digits than its factorization.

43121201234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21560600619.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 43121201234 its reverse (43210212134), we get a palindrome (86331413368).

The spelling of 43121201234 in words is "forty-three billion, one hundred twenty-one million, two hundred one thousand, two hundred thirty-four".