1440213241 has 8 divisors (see below), whose sum is σ = 1505831040. Its totient is φ = 1374845472.

The previous prime is 1440213227. The next prime is 1440213251. The reversal of 1440213241 is 1423120441.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1440213241 - 2⁵ = 1440213209 is a prime.

It is a super-3 number, since 3×1440213241³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440213251) 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, 50676 + ... + 73813.

It is an arithmetic number, because the mean of its divisors is an integer number (188228880).

Almost surely, 2^1440213241 is an apocalyptic number.

It is an amenable number.

1440213241 is a deficient number, since it is larger than the sum of its proper divisors (65617799).

1440213241 is a wasteful number, since it uses less digits than its factorization.

1440213241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125015.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1440213241 is about 37950.1415148877. The cubic root of 1440213241 is about 1129.2989728682.

Adding to 1440213241 its reverse (1423120441), we get a palindrome (2863333682).

The spelling of 1440213241 in words is "one billion, four hundred forty million, two hundred thirteen thousand, two hundred forty-one".