1442721130 has 8 divisors (see below), whose sum is σ = 2596898052. Its totient is φ = 577088448.

The previous prime is 1442721101. The next prime is 1442721139. The reversal of 1442721130 is 311272441.

It can be written as a sum of positive squares in 2 ways, for example, as 1433606769 + 9114361 = 37863^2 + 3019^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1442721095 and 1442721104.

It is not an unprimeable number, because it can be changed into a prime (1442721139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 72136047 + ... + 72136066.

Almost surely, 2^1442721130 is an apocalyptic number.

1442721130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1442721130 is a deficient number, since it is larger than the sum of its proper divisors (1154176922).

1442721130 is a wasteful number, since it uses less digits than its factorization.

1442721130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144272120.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1442721130 is about 37983.1690357716. The cubic root of 1442721130 is about 1129.9540874655.

Adding to 1442721130 its reverse (311272441), we get a palindrome (1753993571).

The spelling of 1442721130 in words is "one billion, four hundred forty-two million, seven hundred twenty-one thousand, one hundred thirty".