1140235291 has 16 divisors (see below), whose sum is σ = 1243295424. Its totient is φ = 1039417344.

The previous prime is 1140235267. The next prime is 1140235309. The reversal of 1140235291 is 1925320411.

It is a cyclic number.

It is not a de Polignac number, because 1140235291 - 2¹¹ = 1140233243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140235991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936315 + ... + 937531.

It is an arithmetic number, because the mean of its divisors is an integer number (77705964).

Almost surely, 2^1140235291 is an apocalyptic number.

1140235291 is a deficient number, since it is larger than the sum of its proper divisors (103060133).

1140235291 is a wasteful number, since it uses less digits than its factorization.

1140235291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1140235291 is about 33767.3702114926. The cubic root of 1140235291 is about 1044.7157918532.

The spelling of 1140235291 in words is "one billion, one hundred forty million, two hundred thirty-five thousand, two hundred ninety-one".