1200857745423 has 48 divisors (see below), whose sum is σ = 1919013507936. Its totient is φ = 665597399040.

The previous prime is 1200857745397. The next prime is 1200857745433. The reversal of 1200857745423 is 3245477580021.

It is a happy number.

It is not a de Polignac number, because 1200857745423 - 2¹² = 1200857741327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200857745433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 466815 + ... + 1618527.

It is an arithmetic number, because the mean of its divisors is an integer number (39979448082).

Almost surely, 2^{1200857745423} is an apocalyptic number.

1200857745423 is a deficient number, since it is larger than the sum of its proper divisors (718155762513).

1200857745423 is a wasteful number, since it uses less digits than its factorization.

1200857745423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151944 (or 1151937 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 48.

The spelling of 1200857745423 in words is "one trillion, two hundred billion, eight hundred fifty-seven million, seven hundred forty-five thousand, four hundred twenty-three".