1421165244 has 24 divisors (see below), whose sum is σ = 3335225040. Its totient is φ = 470982784.

The previous prime is 1421165233. The next prime is 1421165293. The reversal of 1421165244 is 4425611241.

It is a congruent number.

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, 340209 + ... + 344360.

It is an arithmetic number, because the mean of its divisors is an integer number (138967710).

Almost surely, 2^1421165244 is an apocalyptic number.

It is an amenable number.

1421165244 is an abundant number, since it is smaller than the sum of its proper divisors (1914059796).

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

1421165244 is a wasteful number, since it uses less digits than its factorization.

1421165244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684749 (or 684747 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1421165244 is about 37698.3453748304. The cubic root of 1421165244 is about 1124.2982274132.

Adding to 1421165244 its reverse (4425611241), we get a palindrome (5846776485).

The spelling of 1421165244 in words is "one billion, four hundred twenty-one million, one hundred sixty-five thousand, two hundred forty-four".