1140042487 has 2 divisors, whose sum is σ = 1140042488. Its totient is φ = 1140042486.

The previous prime is 1140042439. The next prime is 1140042509. The reversal of 1140042487 is 7842400411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1140042487 - 2²³ = 1131653879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140048487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570021243 + 570021244.

It is an arithmetic number, because the mean of its divisors is an integer number (570021244).

Almost surely, 2^1140042487 is an apocalyptic number.

1140042487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140042487 is an equidigital number, since it uses as much as digits as its factorization.

1140042487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 1140042487 is about 33764.5152045754. The cubic root of 1140042487 is about 1044.6569043765.

Adding to 1140042487 its reverse (7842400411), we get a palindrome (8982442898).

The spelling of 1140042487 in words is "one billion, one hundred forty million, forty-two thousand, four hundred eighty-seven".