1442681481 has 8 divisors (see below), whose sum is σ = 1923765120. Its totient is φ = 961692752.

The previous prime is 1442681479. The next prime is 1442681491. The reversal of 1442681481 is 1841862441.

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 1442681481 - 2¹ = 1442681479 is a prime.

It is a super-2 number, since 2×1442681481² = 4162659711240706722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442681431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27616 + ... + 60398.

It is an arithmetic number, because the mean of its divisors is an integer number (240470640).

Almost surely, 2^1442681481 is an apocalyptic number.

It is an amenable number.

1442681481 is a deficient number, since it is larger than the sum of its proper divisors (481083639).

1442681481 is a wasteful number, since it uses less digits than its factorization.

1442681481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47455.

The product of its digits is 49152, while the sum is 39.

The square root of 1442681481 is about 37982.6471036446. The cubic root of 1442681481 is about 1129.9437362019.

The spelling of 1442681481 in words is "one billion, four hundred forty-two million, six hundred eighty-one thousand, four hundred eighty-one".