1223546342 has 4 divisors (see below), whose sum is σ = 1835319516. Its totient is φ = 611773170.

The previous prime is 1223546339. The next prime is 1223546353. The reversal of 1223546342 is 2436453221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2436453221 = 5791 ⋅420731.

It is a junction number, because it is equal to n+sod(n) for n = 1223546299 and 1223546308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305886584 + ... + 305886587.

It is an arithmetic number, because the mean of its divisors is an integer number (458829879).

Almost surely, 2^1223546342 is an apocalyptic number.

1223546342 is a deficient number, since it is larger than the sum of its proper divisors (611773174).

1223546342 is an equidigital number, since it uses as much as digits as its factorization.

1223546342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611773173.

The product of its digits is 34560, while the sum is 32.

The square root of 1223546342 is about 34979.2272927805. The cubic root of 1223546342 is about 1069.5640760729.

Adding to 1223546342 its reverse (2436453221), we get a palindrome (3659999563).

The spelling of 1223546342 in words is "one billion, two hundred twenty-three million, five hundred forty-six thousand, three hundred forty-two".