43257404434 has 16 divisors (see below), whose sum is σ = 69728357088. Its totient is φ = 20052597312.

The previous prime is 43257404419. The next prime is 43257404447. The reversal of 43257404434 is 43440475234.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9492324 + ... + 9496879.

It is an arithmetic number, because the mean of its divisors is an integer number (4358022318).

Almost surely, 2^43257404434 is an apocalyptic number.

43257404434 is a deficient number, since it is larger than the sum of its proper divisors (26470952654).

43257404434 is a wasteful number, since it uses less digits than its factorization.

43257404434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18989289.

The product of its (nonzero) digits is 645120, while the sum is 40.

Adding to 43257404434 its reverse (43440475234), we get a palindrome (86697879668).

The spelling of 43257404434 in words is "forty-three billion, two hundred fifty-seven million, four hundred four thousand, four hundred thirty-four".