1421165344 has 48 divisors (see below), whose sum is σ = 2974466880. Its totient is φ = 666489600.

The previous prime is 1421165311. The next prime is 1421165357. The reversal of 1421165344 is 4435611241.

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, 49837 + ... + 72979.

It is an arithmetic number, because the mean of its divisors is an integer number (61968060).

Almost surely, 2^1421165344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421165344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1487233440).

1421165344 is an abundant number, since it is smaller than the sum of its proper divisors (1553301536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421165344 is a wasteful number, since it uses less digits than its factorization.

1421165344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23273 (or 23265 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 1421165344 is about 37698.3467011486. The cubic root of 1421165344 is about 1124.2982537835.

Adding to 1421165344 its reverse (4435611241), we get a palindrome (5856776585).

The spelling of 1421165344 in words is "one billion, four hundred twenty-one million, one hundred sixty-five thousand, three hundred forty-four".