140043434 has 8 divisors (see below), whose sum is σ = 213509028. Its totient is φ = 68873760.

The previous prime is 140043427. The next prime is 140043439. The reversal of 140043434 is 434340041.

It can be written as a sum of positive squares in 2 ways, for example, as 139169209 + 874225 = 11797^2 + 935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×140043434² = 39224326813024712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140043439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573827 + ... + 574070.

Almost surely, 2^140043434 is an apocalyptic number.

140043434 is a deficient number, since it is larger than the sum of its proper divisors (73465594).

140043434 is a wasteful number, since it uses less digits than its factorization.

140043434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147960.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 140043434 is about 11833.9948453597. The cubic root of 140043434 is about 519.3031024398.

Adding to 140043434 its reverse (434340041), we get a palindrome (574383475).

The spelling of 140043434 in words is "one hundred forty million, forty-three thousand, four hundred thirty-four".