1223312542 has 8 divisors (see below), whose sum is σ = 1838034000. Its totient is φ = 610634544.

The previous prime is 1223312533. The next prime is 1223312567. The reversal of 1223312542 is 2452133221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509367 + ... + 511762.

It is an arithmetic number, because the mean of its divisors is an integer number (229754250).

Almost surely, 2^1223312542 is an apocalyptic number.

1223312542 is a deficient number, since it is larger than the sum of its proper divisors (614721458).

1223312542 is a wasteful number, since it uses less digits than its factorization.

1223312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021730.

The product of its digits is 2880, while the sum is 25.

The square root of 1223312542 is about 34975.8851496285. The cubic root of 1223312542 is about 1069.4959462436.

Adding to 1223312542 its reverse (2452133221), we get a palindrome (3675445763).

The spelling of 1223312542 in words is "one billion, two hundred twenty-three million, three hundred twelve thousand, five hundred forty-two".