1140400434 has 16 divisors (see below), whose sum is σ = 2314843488. Its totient is φ = 374459712.

The previous prime is 1140400423. The next prime is 1140400451. The reversal of 1140400434 is 4340040411.

It is a self number, because there is not a number n which added to its sum of digits gives 1140400434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418007 + ... + 1418810.

It is an arithmetic number, because the mean of its divisors is an integer number (144677718).

Almost surely, 2^1140400434 is an apocalyptic number.

1140400434 is an abundant number, since it is smaller than the sum of its proper divisors (1174443054).

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

1140400434 is a wasteful number, since it uses less digits than its factorization.

1140400434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836889.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1140400434 is about 33769.8154273902. The cubic root of 1140400434 is about 1044.7662256461.

Adding to 1140400434 its reverse (4340040411), we get a palindrome (5480440845).

The spelling of 1140400434 in words is "one billion, one hundred forty million, four hundred thousand, four hundred thirty-four".