115721434 has 16 divisors (see below), whose sum is σ = 179131176. Its totient is φ = 56032000.

The previous prime is 115721429. The next prime is 115721443. The reversal of 115721434 is 434127511.

It can be written as a sum of positive squares in 4 ways, for example, as 103083409 + 12638025 = 10153^2 + 3555^2 .

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, 6084 + ... + 16384.

Almost surely, 2^115721434 is an apocalyptic number.

115721434 is a deficient number, since it is larger than the sum of its proper divisors (63409742).

115721434 is a wasteful number, since it uses less digits than its factorization.

115721434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10481.

The product of its digits is 3360, while the sum is 28.

The square root of 115721434 is about 10757.3897391514. The cubic root of 115721434 is about 487.3091906341.

Adding to 115721434 its reverse (434127511), we get a palindrome (549848945).

The spelling of 115721434 in words is "one hundred fifteen million, seven hundred twenty-one thousand, four hundred thirty-four".