1442401520 has 40 divisors (see below), whose sum is σ = 3832668384. Its totient is φ = 494537472.

The previous prime is 1442401487. The next prime is 1442401523. The reversal of 1442401520 is 251042441.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442401523) 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, 1287299 + ... + 1288418.

Almost surely, 2^1442401520 is an apocalyptic number.

1442401520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442401520 is an abundant number, since it is smaller than the sum of its proper divisors (2390266864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1442401520 is a wasteful number, since it uses less digits than its factorization.

1442401520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575737 (or 2575731 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1442401520 is about 37978.9615445183. The cubic root of 1442401520 is about 1129.8706406856.

Adding to 1442401520 its reverse (251042441), we get a palindrome (1693443961).

The spelling of 1442401520 in words is "one billion, four hundred forty-two million, four hundred one thousand, five hundred twenty".