1040140555 has 4 divisors (see below), whose sum is σ = 1248168672. Its totient is φ = 832112440.

The previous prime is 1040140553. The next prime is 1040140567. The reversal of 1040140555 is 5550410401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1040140555 - 2¹ = 1040140553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040140553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104014051 + ... + 104014060.

It is an arithmetic number, because the mean of its divisors is an integer number (312042168).

Almost surely, 2^1040140555 is an apocalyptic number.

1040140555 is a deficient number, since it is larger than the sum of its proper divisors (208028117).

1040140555 is an equidigital number, since it uses as much as digits as its factorization.

1040140555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208028116.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1040140555 is about 32251.2101323346. The cubic root of 1040140555 is about 1013.2050442706.

Adding to 1040140555 its reverse (5550410401), we get a palindrome (6590550956).

The spelling of 1040140555 in words is "one billion, forty million, one hundred forty thousand, five hundred fifty-five".