43121381074 has 16 divisors (see below), whose sum is σ = 65089639512. Its totient is φ = 21424963968.

The previous prime is 43121381029. The next prime is 43121381077. The reversal of 43121381074 is 47018312134.

It can be written as a sum of positive squares in 4 ways, for example, as 42639359049 + 482022025 = 206493^2 + 21955^2 .

It is not an unprimeable number, because it can be changed into a prime (43121381077) 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, 658312 + ... + 720844.

Almost surely, 2^43121381074 is an apocalyptic number.

43121381074 is a deficient number, since it is larger than the sum of its proper divisors (21968258438).

43121381074 is a wasteful number, since it uses less digits than its factorization.

43121381074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64701.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 43121381074 in words is "forty-three billion, one hundred twenty-one million, three hundred eighty-one thousand, seventy-four".