1321441402 has 32 divisors (see below), whose sum is σ = 2167087104. Its totient is φ = 602434800.

The previous prime is 1321441369. The next prime is 1321441403. The reversal of 1321441402 is 2041441231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1321441403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88627 + ... + 102457.

It is an arithmetic number, because the mean of its divisors is an integer number (67721472).

Almost surely, 2^1321441402 is an apocalyptic number.

1321441402 is a deficient number, since it is larger than the sum of its proper divisors (845645702).

1321441402 is a wasteful number, since it uses less digits than its factorization.

1321441402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13954.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1321441402 is about 36351.6354790262. The cubic root of 1321441402 is about 1097.3604486299.

Adding to 1321441402 its reverse (2041441231), we get a palindrome (3362882633).

The spelling of 1321441402 in words is "one billion, three hundred twenty-one million, four hundred forty-one thousand, four hundred two".