1140787121 has 2 divisors, whose sum is σ = 1140787122. Its totient is φ = 1140787120.

The previous prime is 1140787111. The next prime is 1140787127. The reversal of 1140787121 is 1217870411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1138725025 + 2062096 = 33745^2 + 1436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140787121 - 2²⁶ = 1073678257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1140787127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570393560 + 570393561.

It is an arithmetic number, because the mean of its divisors is an integer number (570393561).

Almost surely, 2^1140787121 is an apocalyptic number.

It is an amenable number.

1140787121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140787121 is an equidigital number, since it uses as much as digits as its factorization.

1140787121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 1140787121 is about 33775.5402769519. The cubic root of 1140787121 is about 1044.8842987520.

The spelling of 1140787121 in words is "one billion, one hundred forty million, seven hundred eighty-seven thousand, one hundred twenty-one".