1021002641 has 8 divisors (see below), whose sum is σ = 1033905600. Its totient is φ = 1008157392.

The previous prime is 1021002613. The next prime is 1021002659. The reversal of 1021002641 is 1462001201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021002641 - 2¹⁰ = 1021001617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021002691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21746 + ... + 50148.

It is an arithmetic number, because the mean of its divisors is an integer number (129238200).

Almost surely, 2^1021002641 is an apocalyptic number.

It is an amenable number.

1021002641 is a deficient number, since it is larger than the sum of its proper divisors (12902959).

1021002641 is a wasteful number, since it uses less digits than its factorization.

1021002641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28855.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1021002641 is about 31953.1319435200. The cubic root of 1021002641 is about 1006.9524320043.

Adding to 1021002641 its reverse (1462001201), we get a palindrome (2483003842).

The spelling of 1021002641 in words is "one billion, twenty-one million, two thousand, six hundred forty-one".