1243398946084 has 27 divisors (see below), whose sum is σ = 2197684971153. Its totient is φ = 615549817872.

The previous prime is 1243398946079. The next prime is 1243398946099. The reversal of 1243398946084 is 4806498933421.

It is a happy number.

The square root of 1243398946084 is 1115078.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 270556022500 + 972842923584 = 520150^2 + 986328^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 229703362 + ... + 229708774.

Almost surely, 2^{1243398946084} is an apocalyptic number.

1243398946084 is the 1115078-th square number.

It is an amenable number.

1243398946084 is a deficient number, since it is larger than the sum of its proper divisors (954286025069).

1243398946084 is an frugal number, since it uses more digits than its factorization.

1243398946084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11036 (or 5518 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 61.

The spelling of 1243398946084 in words is "one trillion, two hundred forty-three billion, three hundred ninety-eight million, nine hundred forty-six thousand, eighty-four".