1223827556342 has 32 divisors (see below), whose sum is σ = 1949611023360. Its totient is φ = 574919357760.

The previous prime is 1223827556321. The next prime is 1223827556353. The reversal of 1223827556342 is 2436557283221.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3157778 + ... + 3524090.

It is an arithmetic number, because the mean of its divisors is an integer number (60925344480).

Almost surely, 2^{1223827556342} is an apocalyptic number.

1223827556342 is a deficient number, since it is larger than the sum of its proper divisors (725783467018).

1223827556342 is a wasteful number, since it uses less digits than its factorization.

1223827556342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367628.

The product of its digits is 4838400, while the sum is 50.

The spelling of 1223827556342 in words is "one trillion, two hundred twenty-three billion, eight hundred twenty-seven million, five hundred fifty-six thousand, three hundred forty-two".