1440242 has 8 divisors (see below), whose sum is σ = 2210736. Its totient is φ = 703332.

The previous prime is 1440239. The next prime is 1440247. The reversal of 1440242 is 2420441.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440242.

It is not an unprimeable number, because it can be changed into a prime (1440247) 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, 8288 + ... + 8459.

It is an arithmetic number, because the mean of its divisors is an integer number (276342).

2^1440242 is an apocalyptic number.

1440242 is a deficient number, since it is larger than the sum of its proper divisors (770494).

1440242 is a wasteful number, since it uses less digits than its factorization.

1440242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16792.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1440242 is about 1200.1008290973. The cubic root of 1440242 is about 112.9306489647.

Adding to 1440242 its reverse (2420441), we get a palindrome (3860683).

The spelling of 1440242 in words is "one million, four hundred forty thousand, two hundred forty-two".