12955442 has 4 divisors (see below), whose sum is σ = 19433166. Its totient is φ = 6477720.

The previous prime is 12955421. The next prime is 12955471. The reversal of 12955442 is 24455921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24455921 = 7 ⋅3493703.

It can be written as a sum of positive squares in only one way, i.e., 12752041 + 203401 = 3571^2 + 451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12955399 and 12955408.

It is an unprimeable number.

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, 3238859 + ... + 3238862.

Almost surely, 2^12955442 is an apocalyptic number.

12955442 is a deficient number, since it is larger than the sum of its proper divisors (6477724).

12955442 is an equidigital number, since it uses as much as digits as its factorization.

12955442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477723.

The product of its digits is 14400, while the sum is 32.

The square root of 12955442 is about 3599.3668887736. The cubic root of 12955442 is about 234.8645182556.

The spelling of 12955442 in words is "twelve million, nine hundred fifty-five thousand, four hundred forty-two".