1421431244 has 12 divisors (see below), whose sum is σ = 2507092224. Its totient is φ = 705119184.

The previous prime is 1421431241. The next prime is 1421431273. The reversal of 1421431244 is 4421341241.

It is a super-3 number, since 3×1421431244³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1421431241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398539 + ... + 1399554.

It is an arithmetic number, because the mean of its divisors is an integer number (208924352).

Almost surely, 2^1421431244 is an apocalyptic number.

It is an amenable number.

1421431244 is a deficient number, since it is larger than the sum of its proper divisors (1085660980).

1421431244 is a wasteful number, since it uses less digits than its factorization.

1421431244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798224 (or 2798222 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 1421431244 is about 37701.8732160618. The cubic root of 1421431244 is about 1124.3683681359.

Adding to 1421431244 its reverse (4421341241), we get a palindrome (5842772485).

The spelling of 1421431244 in words is "one billion, four hundred twenty-one million, four hundred thirty-one thousand, two hundred forty-four".