1223442134 has 4 divisors (see below), whose sum is σ = 1835163204. Its totient is φ = 611721066.

The previous prime is 1223442133. The next prime is 1223442139. The reversal of 1223442134 is 4312443221.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223442131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305860532 + ... + 305860535.

It is an arithmetic number, because the mean of its divisors is an integer number (458790801).

Almost surely, 2^1223442134 is an apocalyptic number.

1223442134 is a deficient number, since it is larger than the sum of its proper divisors (611721070).

1223442134 is an equidigital number, since it uses as much as digits as its factorization.

1223442134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611721069.

The product of its digits is 4608, while the sum is 26.

The square root of 1223442134 is about 34977.7376912801. The cubic root of 1223442134 is about 1069.5337107069.

Adding to 1223442134 its reverse (4312443221), we get a palindrome (5535885355).

The spelling of 1223442134 in words is "one billion, two hundred twenty-three million, four hundred forty-two thousand, one hundred thirty-four".