1321444025434 has 16 divisors (see below), whose sum is σ = 2134671256872. Its totient is φ = 609888411648.

The previous prime is 1321444025401. The next prime is 1321444025453. The reversal of 1321444025434 is 4345204441231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 714283593409 + 607160432025 = 845153^2 + 779205^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1321444025393 and 1321444025402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1676602 + ... + 2335354.

Almost surely, 2^{1321444025434} is an apocalyptic number.

1321444025434 is a deficient number, since it is larger than the sum of its proper divisors (813227231438).

1321444025434 is a wasteful number, since it uses less digits than its factorization.

1321444025434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735921.

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 1321444025434 its reverse (4345204441231), we get a palindrome (5666648466665).

The spelling of 1321444025434 in words is "one trillion, three hundred twenty-one billion, four hundred forty-four million, twenty-five thousand, four hundred thirty-four".