1142123004 has 120 divisors (see below), whose sum is σ = 3306471168. Its totient is φ = 340860960.

The previous prime is 1142122997. The next prime is 1142123009. The reversal of 1142123004 is 4003212411.

1142123004 is a `hidden beast` number, since 11 + 421 + 230 + 0 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142123009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 236397 + ... + 241179.

Almost surely, 2^1142123004 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 1142123004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653235584).

1142123004 is an abundant number, since it is smaller than the sum of its proper divisors (2164348164).

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

1142123004 is a wasteful number, since it uses less digits than its factorization.

1142123004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4877 (or 4866 counting only the distinct ones).

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

The square root of 1142123004 is about 33795.3103847265. The cubic root of 1142123004 is about 1045.2919993204.

Adding to 1142123004 its reverse (4003212411), we get a palindrome (5145335415).

The spelling of 1142123004 in words is "one billion, one hundred forty-two million, one hundred twenty-three thousand, four".