13140434 has 8 divisors (see below), whose sum is σ = 19755900. Its totient is φ = 6555136.

The previous prime is 13140433. The next prime is 13140461. The reversal of 13140434 is 43404131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11937025 + 1203409 = 3455^2 + 1097^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13140433) 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, 6419 + ... + 8214.

Almost surely, 2^13140434 is an apocalyptic number.

13140434 is a deficient number, since it is larger than the sum of its proper divisors (6615466).

13140434 is a wasteful number, since it uses less digits than its factorization.

13140434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15084.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 13140434 is about 3624.9736550767. The cubic root of 13140434 is about 235.9771236085.

Adding to 13140434 its reverse (43404131), we get a palindrome (56544565).

The spelling of 13140434 in words is "thirteen million, one hundred forty thousand, four hundred thirty-four".