1147133142 has 48 divisors (see below), whose sum is σ = 2602948608. Its totient is φ = 364422960.

The previous prime is 1147133107. The next prime is 1147133147. The reversal of 1147133142 is 2413317411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147133147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112267 + ... + 122057.

It is an arithmetic number, because the mean of its divisors is an integer number (54228096).

Almost surely, 2^1147133142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147133142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301474304).

1147133142 is an abundant number, since it is smaller than the sum of its proper divisors (1455815466).

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

1147133142 is a wasteful number, since it uses less digits than its factorization.

1147133142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105 (or 10102 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1147133142 is about 33869.3540239550. The cubic root of 1147133142 is about 1046.8182266406.

It can be divided in two parts, 114713 and 3142, that added together give a triangular number (117855 = T₄₈₅).

The spelling of 1147133142 in words is "one billion, one hundred forty-seven million, one hundred thirty-three thousand, one hundred forty-two".