1440142111 has 8 divisors (see below), whose sum is σ = 1475766864. Its totient is φ = 1404614400.

The previous prime is 1440142091. The next prime is 1440142139. The reversal of 1440142111 is 1112410441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440142111 - 2¹⁵ = 1440109343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440112111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6255 + ... + 54031.

It is an arithmetic number, because the mean of its divisors is an integer number (184470858).

Almost surely, 2^1440142111 is an apocalyptic number.

1440142111 is a deficient number, since it is larger than the sum of its proper divisors (35624753).

1440142111 is an equidigital number, since it uses as much as digits as its factorization.

1440142111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48521.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1440142111 is about 37949.2043526607. The cubic root of 1440142111 is about 1129.2803810939.

Adding to 1440142111 its reverse (1112410441), we get a palindrome (2552552552).

The spelling of 1440142111 in words is "one billion, four hundred forty million, one hundred forty-two thousand, one hundred eleven".