1140343400 has 48 divisors (see below), whose sum is σ = 3030059040. Its totient is φ = 390974400.

The previous prime is 1140343363. The next prime is 1140343403. The reversal of 1140343400 is 43430411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1140343403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405866 + ... + 408665.

It is an arithmetic number, because the mean of its divisors is an integer number (63126230).

Almost surely, 2^1140343400 is an apocalyptic number.

1140343400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140343400 is an abundant number, since it is smaller than the sum of its proper divisors (1889715640).

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

1140343400 is a wasteful number, since it uses less digits than its factorization.

1140343400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814554 (or 814545 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1140343400 is about 33768.9709644816. The cubic root of 1140343400 is about 1044.7488083166.

Adding to 1140343400 its reverse (43430411), we get a palindrome (1183773811).

The spelling of 1140343400 in words is "one billion, one hundred forty million, three hundred forty-three thousand, four hundred".