1440101 has 4 divisors (see below), whose sum is σ = 1550892. Its totient is φ = 1329312.

The previous prime is 1440079. The next prime is 1440107. The reversal of 1440101 is 1010441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1010441 = 809 ⋅1249.

It can be written as a sum of positive squares in 2 ways, for example, as 172225 + 1267876 = 415^2 + 1126^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440101 - 2⁶ = 1440037 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 (1440107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55376 + ... + 55401.

It is an arithmetic number, because the mean of its divisors is an integer number (387723).

2^1440101 is an apocalyptic number.

It is an amenable number.

1440101 is a deficient number, since it is larger than the sum of its proper divisors (110791).

1440101 is a wasteful number, since it uses less digits than its factorization.

1440101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110790.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1440101 is about 1200.0420825954. The cubic root of 1440101 is about 112.9269635329.

Adding to 1440101 its reverse (1010441), we get a palindrome (2450542).

The spelling of 1440101 in words is "one million, four hundred forty thousand, one hundred one".