1140072445 has 32 divisors (see below), whose sum is σ = 1490511456. Its totient is φ = 833740800.

The previous prime is 1140072421. The next prime is 1140072449. The reversal of 1140072445 is 5442700411.

It can be written as a sum of positive squares in 16 ways, for example, as 291282489 + 848789956 = 17067^2 + 29134^2 .

It is not a de Polignac number, because 1140072445 - 2⁵ = 1140072413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140072449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 964755 + ... + 965935.

It is an arithmetic number, because the mean of its divisors is an integer number (46578483).

Almost surely, 2^1140072445 is an apocalyptic number.

It is an amenable number.

1140072445 is a deficient number, since it is larger than the sum of its proper divisors (350439011).

1140072445 is a wasteful number, since it uses less digits than its factorization.

1140072445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 1140072445 is about 33764.9588330861. The cubic root of 1140072445 is about 1044.6660547832. Note that the first 3 decimals are identical.

Adding to 1140072445 its reverse (5442700411), we get a palindrome (6582772856).

It can be divided in two parts, 11400 and 72445, that added together give a triangular number (83845 = T₄₀₉).

The spelling of 1140072445 in words is "one billion, one hundred forty million, seventy-two thousand, four hundred forty-five".