1442666413 has 4 divisors (see below), whose sum is σ = 1469886588. Its totient is φ = 1415446240.

The previous prime is 1442666387. The next prime is 1442666453. The reversal of 1442666413 is 3146662441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3146662441 = 13 ⋅242050957.

It can be written as a sum of positive squares in 2 ways, for example, as 1101045124 + 341621289 = 33182^2 + 18483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442666413 - 2¹³ = 1442658221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442666453) 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, 13610008 + ... + 13610113.

It is an arithmetic number, because the mean of its divisors is an integer number (367471647).

Almost surely, 2^1442666413 is an apocalyptic number.

It is an amenable number.

1442666413 is a deficient number, since it is larger than the sum of its proper divisors (27220175).

1442666413 is an equidigital number, since it uses as much as digits as its factorization.

1442666413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27220174.

The product of its digits is 82944, while the sum is 37.

The square root of 1442666413 is about 37982.4487493895. The cubic root of 1442666413 is about 1129.9398023118.

The spelling of 1442666413 in words is "one billion, four hundred forty-two million, six hundred sixty-six thousand, four hundred thirteen".