1223745542 has 8 divisors (see below), whose sum is σ = 1836122016. Its totient is φ = 611704872.

The previous prime is 1223745541. The next prime is 1223745571. The reversal of 1223745542 is 2455473221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223745541) 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 in 3 ways as a sum of consecutive naturals, for example, 74633 + ... + 89540.

It is an arithmetic number, because the mean of its divisors is an integer number (229515252).

Almost surely, 2^1223745542 is an apocalyptic number.

1223745542 is a deficient number, since it is larger than the sum of its proper divisors (612376474).

1223745542 is a wasteful number, since it uses less digits than its factorization.

1223745542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167902.

The product of its digits is 67200, while the sum is 35.

The square root of 1223745542 is about 34982.0745811337. The cubic root of 1223745542 is about 1069.6221165398.

The spelling of 1223745542 in words is "one billion, two hundred twenty-three million, seven hundred forty-five thousand, five hundred forty-two".