1257112324243 has 8 divisors (see below), whose sum is σ = 1331085268368. Its totient is φ = 1183142175744.

The previous prime is 1257112324187. The next prime is 1257112324253. The reversal of 1257112324243 is 3424232117521.

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

It is a cyclic number.

It is not a de Polignac number, because 1257112324243 - 2¹³ = 1257112316051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1257112324253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264880 + ... + 1607602.

It is an arithmetic number, because the mean of its divisors is an integer number (166385658546).

Almost surely, 2^{1257112324243} is an apocalyptic number.

1257112324243 is a deficient number, since it is larger than the sum of its proper divisors (73972944125).

1257112324243 is a wasteful number, since it uses less digits than its factorization.

1257112324243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397813.

The product of its digits is 80640, while the sum is 37.

The spelling of 1257112324243 in words is "one trillion, two hundred fifty-seven billion, one hundred twelve million, three hundred twenty-four thousand, two hundred forty-three".