1142123022 has 48 divisors (see below), whose sum is σ = 2608944000. Its totient is φ = 360102672.

The previous prime is 1142123011. The next prime is 1142123039. The reversal of 1142123022 is 2203212411.

It is a happy number.

1142123022 is a `hidden beast` number, since 11 + 421 + 230 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1142122986 and 1142123004.

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, 250479 + ... + 254997.

It is an arithmetic number, because the mean of its divisors is an integer number (54353000).

Almost surely, 2^1142123022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142123022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304472000).

1142123022 is an abundant number, since it is smaller than the sum of its proper divisors (1466820978).

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

1142123022 is a wasteful number, since it uses less digits than its factorization.

1142123022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285 (or 5282 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1142123022 is about 33795.3106510356. The cubic root of 1142123022 is about 1045.2920048117.

Adding to 1142123022 its reverse (2203212411), we get a palindrome (3345335433).

It can be divided in two parts, 11421 and 23022, that added together give a palindrome (34443).

The spelling of 1142123022 in words is "one billion, one hundred forty-two million, one hundred twenty-three thousand, twenty-two".