40434243434 has 16 divisors (see below), whose sum is σ = 65327762472. Its totient is φ = 18658842048.

The previous prime is 40434243433. The next prime is 40434243439. The reversal of 40434243434 is 43434243404.

It can be written as a sum of positive squares in 4 ways, for example, as 36988905625 + 3445337809 = 192325^2 + 58697^2 .

It is a super-2 number, since 2×40434243434² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40434243394 and 40434243403.

It is not an unprimeable number, because it can be changed into a prime (40434243433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32672 + ... + 286244.

Almost surely, 2^40434243434 is an apocalyptic number.

40434243434 is a deficient number, since it is larger than the sum of its proper divisors (24893519038).

40434243434 is a wasteful number, since it uses less digits than its factorization.

40434243434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259721.

The product of its (nonzero) digits is 221184, while the sum is 35.

Adding to 40434243434 its reverse (43434243404), we get a palindrome (83868486838).

The spelling of 40434243434 in words is "forty billion, four hundred thirty-four million, two hundred forty-three thousand, four hundred thirty-four".