1440042433 has 8 divisors (see below), whose sum is σ = 1540685120. Its totient is φ = 1341884880.

The previous prime is 1440042431. The next prime is 1440042469. The reversal of 1440042433 is 3342400441.

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

It is not a de Polignac number, because 1440042433 - 2¹ = 1440042431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440042398 and 1440042407.

It is not an unprimeable number, because it can be changed into a prime (1440042431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620085 + ... + 622402.

It is an arithmetic number, because the mean of its divisors is an integer number (192585640).

Almost surely, 2^1440042433 is an apocalyptic number.

It is an amenable number.

1440042433 is a deficient number, since it is larger than the sum of its proper divisors (100642687).

1440042433 is a wasteful number, since it uses less digits than its factorization.

1440042433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242567.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1440042433 is about 37947.8910217683. The cubic root of 1440042433 is about 1129.2543264877.

Adding to 1440042433 its reverse (3342400441), we get a palindrome (4782442874).

The spelling of 1440042433 in words is "one billion, four hundred forty million, forty-two thousand, four hundred thirty-three".