1442072440 has 16 divisors (see below), whose sum is σ = 3244663080. Its totient is φ = 576828960.

The previous prime is 1442072419. The next prime is 1442072483. The reversal of 1442072440 is 442702441.

It is a junction number, because it is equal to n+sod(n) for n = 1442072399 and 1442072408.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18025866 + ... + 18025945.

Almost surely, 2^1442072440 is an apocalyptic number.

1442072440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442072440 is an abundant number, since it is smaller than the sum of its proper divisors (1802590640).

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

1442072440 is a wasteful number, since it uses less digits than its factorization.

1442072440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36051822 (or 36051818 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 1442072440 is about 37974.6288987792. The cubic root of 1442072440 is about 1129.7847085081.

Adding to 1442072440 its reverse (442702441), we get a palindrome (1884774881).

The spelling of 1442072440 in words is "one billion, four hundred forty-two million, seventy-two thousand, four hundred forty".