1002424121 has 4 divisors (see below), whose sum is σ = 1036990500. Its totient is φ = 967857744.

The previous prime is 1002424109. The next prime is 1002424123. The reversal of 1002424121 is 1214242001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219040000 + 783384121 = 14800^2 + 27989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002424121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002424121.

It is not an unprimeable number, because it can be changed into a prime (1002424123) 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, 17283146 + ... + 17283203.

It is an arithmetic number, because the mean of its divisors is an integer number (259247625).

Almost surely, 2^1002424121 is an apocalyptic number.

It is an amenable number.

1002424121 is a deficient number, since it is larger than the sum of its proper divisors (34566379).

1002424121 is an equidigital number, since it uses as much as digits as its factorization.

1002424121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34566378.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1002424121 is about 31661.0821198518. The cubic root of 1002424121 is about 1000.8073882821.

Adding to 1002424121 its reverse (1214242001), we get a palindrome (2216666122).

The spelling of 1002424121 in words is "one billion, two million, four hundred twenty-four thousand, one hundred twenty-one".