1021241425 has 12 divisors (see below), whose sum is σ = 1340830476. Its totient is φ = 768934400.

The previous prime is 1021241413. The next prime is 1021241483. The reversal of 1021241425 is 5241421201.

It can be written as a sum of positive squares in 6 ways, for example, as 9492561 + 1011748864 = 3081^2 + 31808^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1021241425 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021241396 and 1021241405.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1201036 + ... + 1201885.

It is an arithmetic number, because the mean of its divisors is an integer number (111735873).

Almost surely, 2^1021241425 is an apocalyptic number.

It is an amenable number.

1021241425 is a deficient number, since it is larger than the sum of its proper divisors (319589051).

1021241425 is a wasteful number, since it uses less digits than its factorization.

1021241425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402948 (or 2402943 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1021241425 is about 31956.8681976191. The cubic root of 1021241425 is about 1007.0309252350.

Adding to 1021241425 its reverse (5241421201), we get a palindrome (6262662626).

The spelling of 1021241425 in words is "one billion, twenty-one million, two hundred forty-one thousand, four hundred twenty-five".