1142056378864 has 120 divisors (see below), whose sum is σ = 2482319871360. Its totient is φ = 507873856512.

The previous prime is 1142056378787. The next prime is 1142056378889. The reversal of 1142056378864 is 4688736502411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8762527 + ... + 8891905.

It is an arithmetic number, because the mean of its divisors is an integer number (20685998928).

Almost surely, 2^{1142056378864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142056378864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1241159935680).

1142056378864 is an abundant number, since it is smaller than the sum of its proper divisors (1340263492496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142056378864 is a wasteful number, since it uses less digits than its factorization.

1142056378864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129527 (or 129504 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 1142056378864 in words is "one trillion, one hundred forty-two billion, fifty-six million, three hundred seventy-eight thousand, eight hundred sixty-four".