1421230500 has 72 divisors (see below), whose sum is σ = 4483522680. Its totient is φ = 378993600.

The previous prime is 1421230483. The next prime is 1421230529. The reversal of 1421230500 is 50321241.

1421230500 is a `hidden beast` number, since 1 + 42 + 123 + 0 + 500 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 374190336 + 1047040164 = 19344^2 + 32358^2 .

It is a super-2 number, since 2×1421230500² = 4039792268260500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153415 + ... + 162414.

Almost surely, 2^1421230500 is an apocalyptic number.

1421230500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421230500 is an abundant number, since it is smaller than the sum of its proper divisors (3062292180).

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

1421230500 is a wasteful number, since it uses less digits than its factorization.

1421230500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315854 (or 315839 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1421230500 is about 37699.2108670725. The cubic root of 1421230500 is about 1124.3154353775.

Adding to 1421230500 its reverse (50321241), we get a palindrome (1471551741).

The spelling of 1421230500 in words is "one billion, four hundred twenty-one million, two hundred thirty thousand, five hundred".