1346243121 has 12 divisors (see below), whose sum is σ = 1944932548. Its totient is φ = 897329664.

The previous prime is 1346243117. The next prime is 1346243149. The reversal of 1346243121 is 1213426431.

It is a happy number.

1346243121 is a `hidden beast` number, since 1 + 3 + 4 + 624 + 31 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 442639521 + 903603600 = 21039^2 + 30060^2 .

It is not a de Polignac number, because 1346243121 - 2² = 1346243117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1346244121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56421 + ... + 76653.

Almost surely, 2^1346243121 is an apocalyptic number.

It is an amenable number.

1346243121 is a deficient number, since it is larger than the sum of its proper divisors (598689427).

1346243121 is a wasteful number, since it uses less digits than its factorization.

1346243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27632 (or 27629 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1346243121 is about 36691.1858761747. The cubic root of 1346243121 is about 1104.1832777989.

Adding to 1346243121 its reverse (1213426431), we get a palindrome (2559669552).

The spelling of 1346243121 in words is "one billion, three hundred forty-six million, two hundred forty-three thousand, one hundred twenty-one".