1421243168 has 24 divisors (see below), whose sum is σ = 2945340720. Its totient is φ = 673220160.

The previous prime is 1421243167. The next prime is 1421243171. The reversal of 1421243168 is 8613421241.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1421243167) 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, 1168178 + ... + 1169393.

It is an arithmetic number, because the mean of its divisors is an integer number (122722530).

Almost surely, 2^1421243168 is an apocalyptic number.

It is an amenable number.

1421243168 is an abundant number, since it is smaller than the sum of its proper divisors (1524097552).

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

1421243168 is a wasteful number, since it uses less digits than its factorization.

1421243168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337600 (or 2337592 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1421243168 is about 37699.3788808251. The cubic root of 1421243168 is about 1124.3187758597.

The spelling of 1421243168 in words is "one billion, four hundred twenty-one million, two hundred forty-three thousand, one hundred sixty-eight".