8133442 has 4 divisors (see below), whose sum is σ = 12200166. Its totient is φ = 4066720.

The previous prime is 8133431. The next prime is 8133449. The reversal of 8133442 is 2443318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443318 = 2 ⋅1221659.

It can be written as a sum of positive squares in only one way, i.e., 8116801 + 16641 = 2849^2 + 129^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8133449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2033359 + ... + 2033362.

Almost surely, 2^8133442 is an apocalyptic number.

8133442 is a deficient number, since it is larger than the sum of its proper divisors (4066724).

8133442 is a wasteful number, since it uses less digits than its factorization.

8133442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066723.

The product of its digits is 2304, while the sum is 25.

The square root of 8133442 is about 2851.9190030574. The cubic root of 8133442 is about 201.1058904277.

The spelling of 8133442 in words is "eight million, one hundred thirty-three thousand, four hundred forty-two".