1140142477 has 2 divisors, whose sum is σ = 1140142478. Its totient is φ = 1140142476.

The previous prime is 1140142447. The next prime is 1140142501. The reversal of 1140142477 is 7742410411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1135622601 + 4519876 = 33699^2 + 2126^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140142477 - 2¹⁹ = 1139618189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140142447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570071238 + 570071239.

It is an arithmetic number, because the mean of its divisors is an integer number (570071239).

Almost surely, 2^1140142477 is an apocalyptic number.

It is an amenable number.

1140142477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140142477 is an equidigital number, since it uses as much as digits as its factorization.

1140142477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 1140142477 is about 33765.9958686250. The cubic root of 1140142477 is about 1044.6874448143.

Adding to 1140142477 its reverse (7742410411), we get a palindrome (8882552888).

The spelling of 1140142477 in words is "one billion, one hundred forty million, one hundred forty-two thousand, four hundred seventy-seven".