1440254 has 4 divisors (see below), whose sum is σ = 2160384. Its totient is φ = 720126.

The previous prime is 1440253. The next prime is 1440259. The reversal of 1440254 is 4520441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4520441 = 499 ⋅9059.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360062 + ... + 360065.

It is an arithmetic number, because the mean of its divisors is an integer number (540096).

2^1440254 is an apocalyptic number.

1440254 is a deficient number, since it is larger than the sum of its proper divisors (720130).

1440254 is an equidigital number, since it uses as much as digits as its factorization.

1440254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720129.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1440254 is about 1200.1058286668. The cubic root of 1440254 is about 112.9309626074.

Adding to 1440254 its reverse (4520441), we get a palindrome (5960695).

The spelling of 1440254 in words is "one million, four hundred forty thousand, two hundred fifty-four".