12951434 has 4 divisors (see below), whose sum is σ = 19427154. Its totient is φ = 6475716.

The previous prime is 12951431. The next prime is 12951457. The reversal of 12951434 is 43415921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43415921 = 47 ⋅923743.

It can be written as a sum of positive squares in only one way, i.e., 9284209 + 3667225 = 3047^2 + 1915^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12951397 and 12951406.

It is not an unprimeable number, because it can be changed into a prime (12951431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3237857 + ... + 3237860.

Almost surely, 2^12951434 is an apocalyptic number.

12951434 is a deficient number, since it is larger than the sum of its proper divisors (6475720).

12951434 is an equidigital number, since it uses as much as digits as its factorization.

12951434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475719.

The product of its digits is 4320, while the sum is 29.

The square root of 12951434 is about 3598.8100811240. The cubic root of 12951434 is about 234.8402958972.

The spelling of 12951434 in words is "twelve million, nine hundred fifty-one thousand, four hundred thirty-four".