1443020121 has 6 divisors (see below), whose sum is σ = 2084362410. Its totient is φ = 962013408.

The previous prime is 1443020107. The next prime is 1443020141. The reversal of 1443020121 is 1210203441.

1443020121 is a `hidden beast` number, since 1 + 443 + 0 + 201 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1101509721 + 341510400 = 33189^2 + 18480^2 .

It is not a de Polignac number, because 1443020121 - 2¹⁹ = 1442495833 is a prime.

It is a super-2 number, since 2×1443020121² = 4164614139221709282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1443020094 and 1443020103.

It is not an unprimeable number, because it can be changed into a prime (1443020141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80167776 + ... + 80167793.

It is an arithmetic number, because the mean of its divisors is an integer number (347393735).

Almost surely, 2^1443020121 is an apocalyptic number.

It is an amenable number.

1443020121 is a deficient number, since it is larger than the sum of its proper divisors (641342289).

1443020121 is a wasteful number, since it uses less digits than its factorization.

1443020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160335575 (or 160335572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1443020121 is about 37987.1046672420. The cubic root of 1443020121 is about 1130.0321396868.

Adding to 1443020121 its reverse (1210203441), we get a palindrome (2653223562).

The spelling of 1443020121 in words is "one billion, four hundred forty-three million, twenty thousand, one hundred twenty-one".