1442130221 has 6 divisors (see below), whose sum is σ = 1677580110. Its totient is φ = 1236111576.

The previous prime is 1442130197. The next prime is 1442130233. The reversal of 1442130221 is 1220312441.

It can be written as a sum of positive squares in only one way, i.e., 1269496900 + 172633321 = 35630^2 + 13139^2 .

It is not a de Polignac number, because 1442130221 - 2¹⁴ = 1442113837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1442130193 and 1442130202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442130721) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 14715566 + ... + 14715663.

It is an arithmetic number, because the mean of its divisors is an integer number (279596685).

Almost surely, 2^1442130221 is an apocalyptic number.

It is an amenable number.

1442130221 is a deficient number, since it is larger than the sum of its proper divisors (235449889).

1442130221 is an equidigital number, since it uses as much as digits as its factorization.

1442130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29431243 (or 29431236 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1442130221 is about 37975.3896754201. The cubic root of 1442130221 is about 1129.7997977220.

Adding to 1442130221 its reverse (1220312441), we get a palindrome (2662442662).

The spelling of 1442130221 in words is "one billion, four hundred forty-two million, one hundred thirty thousand, two hundred twenty-one".