1142004400 has 60 divisors (see below), whose sum is σ = 2746914712. Its totient is φ = 456261120.

The previous prime is 1142004343. The next prime is 1142004403. The reversal of 1142004400 is 44002411.

1142004400 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1142004403) 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 11 ways as a sum of consecutive naturals, for example, 661939 + ... + 663661.

Almost surely, 2^1142004400 is an apocalyptic number.

1142004400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142004400 is an abundant number, since it is smaller than the sum of its proper divisors (1604910312).

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

1142004400 is a wasteful number, since it uses less digits than its factorization.

1142004400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398 (or 3387 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1142004400 is about 33793.5555986641. Note that the first 4 decimals coincide. The cubic root of 1142004400 is about 1045.2558152131.

Adding to 1142004400 its reverse (44002411), we get a palindrome (1186006811).

The spelling of 1142004400 in words is "one billion, one hundred forty-two million, four thousand, four hundred".