1421143412 has 24 divisors (see below), whose sum is σ = 2794759296. Its totient is φ = 627393888.

The previous prime is 1421143393. The next prime is 1421143429. The reversal of 1421143412 is 2143411241.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592928 + ... + 595319.

It is an arithmetic number, because the mean of its divisors is an integer number (116448304).

Almost surely, 2^1421143412 is an apocalyptic number.

It is an amenable number.

1421143412 is a deficient number, since it is larger than the sum of its proper divisors (1373615884).

1421143412 is a wasteful number, since it uses less digits than its factorization.

1421143412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188287 (or 1188285 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 1421143412 is about 37698.0558119381. The cubic root of 1421143412 is about 1124.2924702116.

Adding to 1421143412 its reverse (2143411241), we get a palindrome (3564554653).

The spelling of 1421143412 in words is "one billion, four hundred twenty-one million, one hundred forty-three thousand, four hundred twelve".