1421024121 has 24 divisors (see below), whose sum is σ = 2314008480. Its totient is φ = 861224760.

The previous prime is 1421024119. The next prime is 1421024131. The reversal of 1421024121 is 1214201241.

1421024121 is a `hidden beast` number, since 1 + 421 + 0 + 241 + 2 + 1 = 666.

It is not a de Polignac number, because 1421024121 - 2¹ = 1421024119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1421024094 and 1421024103.

It is not an unprimeable number, because it can be changed into a prime (1421024131) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 214215 + ... + 220748.

It is an arithmetic number, because the mean of its divisors is an integer number (96417020).

Almost surely, 2^1421024121 is an apocalyptic number.

1421024121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1421024121 is a deficient number, since it is larger than the sum of its proper divisors (892984359).

1421024121 is a wasteful number, since it uses less digits than its factorization.

1421024121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434994 (or 434977 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1421024121 is about 37696.4735883875. The cubic root of 1421024121 is about 1124.2610115695.

Adding to 1421024121 its reverse (1214201241), we get a palindrome (2635225362).

The spelling of 1421024121 in words is "one billion, four hundred twenty-one million, twenty-four thousand, one hundred twenty-one".