1440115 has 4 divisors (see below), whose sum is σ = 1728144. Its totient is φ = 1152088.

The previous prime is 1440107. The next prime is 1440119. The reversal of 1440115 is 5110441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1440115 - 2³ = 1440107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144007 + ... + 144016.

It is an arithmetic number, because the mean of its divisors is an integer number (432036).

2^1440115 is an apocalyptic number.

1440115 is a deficient number, since it is larger than the sum of its proper divisors (288029).

1440115 is an equidigital number, since it uses as much as digits as its factorization.

1440115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288028.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1440115 is about 1200.0479157100. The cubic root of 1440115 is about 112.9273294730.

Adding to 1440115 its reverse (5110441), we get a palindrome (6550556).

It can be divided in two parts, 1440 and 115, that multiplied together give a triangular number (165600 = T₅₇₅).

The spelling of 1440115 in words is "one million, four hundred forty thousand, one hundred fifteen".