1140895121 has 4 divisors (see below), whose sum is σ = 1150991652. Its totient is φ = 1130798592.

The previous prime is 1140895117. The next prime is 1140895157. The reversal of 1140895121 is 1215980411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 140754496 + 1000140625 = 11864^2 + 31625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140895121 - 2² = 1140895117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1140795121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5048096 + ... + 5048321.

It is an arithmetic number, because the mean of its divisors is an integer number (287747913).

Almost surely, 2^1140895121 is an apocalyptic number.

It is an amenable number.

1140895121 is a deficient number, since it is larger than the sum of its proper divisors (10096531).

1140895121 is a wasteful number, since it uses less digits than its factorization.

1140895121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096530.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1140895121 is about 33777.1390292310. The cubic root of 1140895121 is about 1044.9172712910.

The spelling of 1140895121 in words is "one billion, one hundred forty million, eight hundred ninety-five thousand, one hundred twenty-one".