43012126402 has 12 divisors (see below), whose sum is σ = 75051771750. Its totient is φ = 18433768416.

The previous prime is 43012126397. The next prime is 43012126457. The reversal of 43012126402 is 20462121034.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37388476321 + 5623650081 = 193361^2 + 74991^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219449527 + ... + 219449722.

Almost surely, 2^43012126402 is an apocalyptic number.

43012126402 is a deficient number, since it is larger than the sum of its proper divisors (32039645348).

43012126402 is a wasteful number, since it uses less digits than its factorization.

43012126402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438899265 (or 438899258 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 43012126402 its reverse (20462121034), we get a palindrome (63474247436).

The spelling of 43012126402 in words is "forty-three billion, twelve million, one hundred twenty-six thousand, four hundred two".