1442305240 has 32 divisors (see below), whose sum is σ = 3247938000. Its totient is φ = 576433024.

The previous prime is 1442305237. The next prime is 1442305297. The reversal of 1442305240 is 425032441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34491 + ... + 63829.

Almost surely, 2^1442305240 is an apocalyptic number.

1442305240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442305240 is an abundant number, since it is smaller than the sum of its proper divisors (1805632760).

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

1442305240 is a wasteful number, since it uses less digits than its factorization.

1442305240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30579 (or 30575 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1442305240 is about 37977.6939794928. The cubic root of 1442305240 is about 1129.8455005832.

Adding to 1442305240 its reverse (425032441), we get a palindrome (1867337681).

The spelling of 1442305240 in words is "one billion, four hundred forty-two million, three hundred five thousand, two hundred forty".