1024121421 has 16 divisors (see below), whose sum is σ = 1525993920. Its totient is φ = 678798000.

The previous prime is 1024121407. The next prime is 1024121459. The reversal of 1024121421 is 1241214201.

1024121421 is a `hidden beast` number, since 1 + 0 + 241 + 2 + 1 + 421 = 666.

It is not a de Polignac number, because 1024121421 - 2⁵ = 1024121389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1024121394 and 1024121403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024121401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104955 + ... + 114296.

It is an arithmetic number, because the mean of its divisors is an integer number (95374620).

Almost surely, 2^1024121421 is an apocalyptic number.

It is an amenable number.

1024121421 is a deficient number, since it is larger than the sum of its proper divisors (501872499).

1024121421 is a wasteful number, since it uses less digits than its factorization.

1024121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219433 (or 219427 counting only the distinct ones).

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

The square root of 1024121421 is about 32001.8971468880. The cubic root of 1024121421 is about 1007.9766771106.

Adding to 1024121421 its reverse (1241214201), we get a palindrome (2265335622).

The spelling of 1024121421 in words is "one billion, twenty-four million, one hundred twenty-one thousand, four hundred twenty-one".