1140105961 has 2 divisors, whose sum is σ = 1140105962. Its totient is φ = 1140105960.

The previous prime is 1140105947. The next prime is 1140105977. The reversal of 1140105961 is 1695010411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 995023936 + 145082025 = 31544^2 + 12045^2 .

It is an emirp because it is prime and its reverse (1695010411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1140105961 - 2¹⁷ = 1139974889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1140105991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570052980 + 570052981.

It is an arithmetic number, because the mean of its divisors is an integer number (570052981).

Almost surely, 2^1140105961 is an apocalyptic number.

It is an amenable number.

1140105961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140105961 is an equidigital number, since it uses as much as digits as its factorization.

1140105961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1140105961 is about 33765.4551427935. The cubic root of 1140105961 is about 1044.6762917597.

The spelling of 1140105961 in words is "one billion, one hundred forty million, one hundred five thousand, nine hundred sixty-one".