1440342041 has 4 divisors (see below), whose sum is σ = 1502965632. Its totient is φ = 1377718452.

The previous prime is 1440341989. The next prime is 1440342053. The reversal of 1440342041 is 1402430441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1402430441 = 5501 ⋅254941.

It is a cyclic number.

It is not a de Polignac number, because 1440342041 - 2⁶ = 1440341977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 62623567 = 1440342041 / (1 + 4 + 4 + 0 + 3 + 4 + 2 + 0 + 4 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440341998 and 1440342016.

It is not an unprimeable number, because it can be changed into a prime (1440342641) 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, 31311761 + ... + 31311806.

It is an arithmetic number, because the mean of its divisors is an integer number (375741408).

Almost surely, 2^1440342041 is an apocalyptic number.

It is an amenable number.

1440342041 is a deficient number, since it is larger than the sum of its proper divisors (62623591).

1440342041 is an equidigital number, since it uses as much as digits as its factorization.

1440342041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62623590.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1440342041 is about 37951.8384403180. The cubic root of 1440342041 is about 1129.3326367192.

Adding to 1440342041 its reverse (1402430441), we get a palindrome (2842772482).

The spelling of 1440342041 in words is "one billion, four hundred forty million, three hundred forty-two thousand, forty-one".