1440342213 has 16 divisors (see below), whose sum is σ = 1968350976. Its totient is φ = 936427520.

The previous prime is 1440342203. The next prime is 1440342223. The reversal of 1440342213 is 3122430441.

It is an interprime number because it is at equal distance from previous prime (1440342203) and next prime (1440342223).

It is a cyclic number.

It is not a de Polignac number, because 1440342213 - 2⁹ = 1440341701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440342203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21445 + ... + 57797.

It is an arithmetic number, because the mean of its divisors is an integer number (123021936).

Almost surely, 2^1440342213 is an apocalyptic number.

It is an amenable number.

1440342213 is a deficient number, since it is larger than the sum of its proper divisors (528008763).

1440342213 is a wasteful number, since it uses less digits than its factorization.

1440342213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36684.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1440342213 is about 37951.8407063478. The cubic root of 1440342213 is about 1129.3326816727.

Adding to 1440342213 its reverse (3122430441), we get a palindrome (4562772654).

It can be divided in two parts, 14403 and 42213, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 1440342213 in words is "one billion, four hundred forty million, three hundred forty-two thousand, two hundred thirteen".