43442434402 has 4 divisors (see below), whose sum is σ = 65163651606. Its totient is φ = 21721217200.

The previous prime is 43442434397. The next prime is 43442434459. The reversal of 43442434402 is 20443424434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20443424434 = 2 ⋅10221712217.

It can be written as a sum of positive squares in only one way, i.e., 30979168081 + 12463266321 = 176009^2 + 111639^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10860608599 + ... + 10860608602.

Almost surely, 2^43442434402 is an apocalyptic number.

43442434402 is a deficient number, since it is larger than the sum of its proper divisors (21721217204).

43442434402 is a wasteful number, since it uses less digits than its factorization.

43442434402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21721217203.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 43442434402 its reverse (20443424434), we get a palindrome (63885858836).

The spelling of 43442434402 in words is "forty-three billion, four hundred forty-two million, four hundred thirty-four thousand, four hundred two".