1143120654 has 128 divisors (see below), whose sum is σ = 2892395520. Its totient is φ = 331993728.

The previous prime is 1143120623. The next prime is 1143120659. The reversal of 1143120654 is 4560213411.

It is a happy number.

1143120654 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 1 + 2 + 0 + 654 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143120659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1339692 + ... + 1340544.

It is an arithmetic number, because the mean of its divisors is an integer number (22596840).

Almost surely, 2^1143120654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143120654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1446197760).

1143120654 is an abundant number, since it is smaller than the sum of its proper divisors (1749274866).

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

1143120654 is a wasteful number, since it uses less digits than its factorization.

1143120654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1143120654 is about 33810.0673468717. The cubic root of 1143120654 is about 1045.5962666268.

The spelling of 1143120654 in words is "one billion, one hundred forty-three million, one hundred twenty thousand, six hundred fifty-four".