1421063720 has 32 divisors (see below), whose sum is σ = 3220408800. Its totient is φ = 564333888.

The previous prime is 1421063701. The next prime is 1421063729. The reversal of 1421063720 is 273601241.

1421063720 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1421063720.

It is not an unprimeable number, because it can be changed into a prime (1421063729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122234 + ... + 133353.

It is an arithmetic number, because the mean of its divisors is an integer number (100637775).

Almost surely, 2^1421063720 is an apocalyptic number.

1421063720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421063720 is an abundant number, since it is smaller than the sum of its proper divisors (1799345080).

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

1421063720 is a wasteful number, since it uses less digits than its factorization.

1421063720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255737 (or 255733 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1421063720 is about 37696.9988195347. The cubic root of 1421063720 is about 1124.2714545539.

Adding to 1421063720 its reverse (273601241), we get a palindrome (1694664961).

The spelling of 1421063720 in words is "one billion, four hundred twenty-one million, sixty-three thousand, seven hundred twenty".