1442321240 has 16 divisors (see below), whose sum is σ = 3245222880. Its totient is φ = 576928480.

The previous prime is 1442321213. The next prime is 1442321267. The reversal of 1442321240 is 421232441.

It is an interprime number because it is at equal distance from previous prime (1442321213) and next prime (1442321267).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18028976 + ... + 18029055.

It is an arithmetic number, because the mean of its divisors is an integer number (202826430).

Almost surely, 2^1442321240 is an apocalyptic number.

1442321240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442321240 is an abundant number, since it is smaller than the sum of its proper divisors (1802901640).

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

1442321240 is a wasteful number, since it uses less digits than its factorization.

1442321240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36058042 (or 36058038 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1442321240 is about 37977.9046288760. The cubic root of 1442321240 is about 1129.8496784925.

Adding to 1442321240 its reverse (421232441), we get a palindrome (1863553681).

The spelling of 1442321240 in words is "one billion, four hundred forty-two million, three hundred twenty-one thousand, two hundred forty".