1021242041 has 4 divisors (see below), whose sum is σ = 1035231732. Its totient is φ = 1007252352.

The previous prime is 1021242031. The next prime is 1021242059. The reversal of 1021242041 is 1402421201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1402421201 = 37369 ⋅37529.

It can be written as a sum of positive squares in 2 ways, for example, as 705433600 + 315808441 = 26560^2 + 17771^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021242041 - 2¹⁴ = 1021225657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021242011) 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, 6994736 + ... + 6994881.

It is an arithmetic number, because the mean of its divisors is an integer number (258807933).

Almost surely, 2^1021242041 is an apocalyptic number.

It is an amenable number.

1021242041 is a deficient number, since it is larger than the sum of its proper divisors (13989691).

1021242041 is an equidigital number, since it uses as much as digits as its factorization.

1021242041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13989690.

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

The square root of 1021242041 is about 31956.8778356084. The cubic root of 1021242041 is about 1007.0311277111.

Adding to 1021242041 its reverse (1402421201), we get a palindrome (2423663242).

The spelling of 1021242041 in words is "one billion, twenty-one million, two hundred forty-two thousand, forty-one".