13122146 has 4 divisors (see below), whose sum is σ = 19683222. Its totient is φ = 6561072.

The previous prime is 13122133. The next prime is 13122157. The reversal of 13122146 is 64122131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64122131 = 19 ⋅3374849.

It can be written as a sum of positive squares in only one way, i.e., 7623121 + 5499025 = 2761^2 + 2345^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280535 + ... + 3280538.

Almost surely, 2^13122146 is an apocalyptic number.

13122146 is a deficient number, since it is larger than the sum of its proper divisors (6561076).

13122146 is an equidigital number, since it uses as much as digits as its factorization.

13122146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561075.

The product of its digits is 288, while the sum is 20.

The square root of 13122146 is about 3622.4502757112. The cubic root of 13122146 is about 235.8676002543.

Adding to 13122146 its reverse (64122131), we get a palindrome (77244277).

The spelling of 13122146 in words is "thirteen million, one hundred twenty-two thousand, one hundred forty-six".