1442237640 has 128 divisors (see below), whose sum is σ = 4459536000. Its totient is φ = 372971520.

The previous prime is 1442237633. The next prime is 1442237659. The reversal of 1442237640 is 467322441.

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 31 ways as a sum of consecutive naturals, for example, 533011 + ... + 535709.

It is an arithmetic number, because the mean of its divisors is an integer number (34840125).

Almost surely, 2^1442237640 is an apocalyptic number.

1442237640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1442237640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2229768000).

1442237640 is an abundant number, since it is smaller than the sum of its proper divisors (3017298360).

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

1442237640 is a wasteful number, since it uses less digits than its factorization.

1442237640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847 (or 2843 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 1442237640 is about 37976.8039729517. The cubic root of 1442237640 is about 1129.8278485756.

The spelling of 1442237640 in words is "one billion, four hundred forty-two million, two hundred thirty-seven thousand, six hundred forty".