1140142447 has 2 divisors, whose sum is σ = 1140142448. Its totient is φ = 1140142446.

The previous prime is 1140142429. The next prime is 1140142477. The reversal of 1140142447 is 7442410411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1140142447 - 2⁷ = 1140142319 is a prime.

It is a super-2 number, since 2×1140142447² = 2599849598902295618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140142477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570071223 + 570071224.

It is an arithmetic number, because the mean of its divisors is an integer number (570071224).

Almost surely, 2^1140142447 is an apocalyptic number.

1140142447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140142447 is an equidigital number, since it uses as much as digits as its factorization.

1140142447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1140142447 is about 33765.9954243911. The cubic root of 1140142447 is about 1044.6874356515.

Adding to 1140142447 its reverse (7442410411), we get a palindrome (8582552858).

The spelling of 1140142447 in words is "one billion, one hundred forty million, one hundred forty-two thousand, four hundred forty-seven".