1041242021 has 2 divisors, whose sum is σ = 1041242022. Its totient is φ = 1041242020.

The previous prime is 1041242017. The next prime is 1041242023. The reversal of 1041242021 is 1202421401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1029511396 + 11730625 = 32086^2 + 3425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1041242021 - 2² = 1041242017 is a prime.

Together with 1041242023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1041242023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520621010 + 520621011.

It is an arithmetic number, because the mean of its divisors is an integer number (520621011).

Almost surely, 2^1041242021 is an apocalyptic number.

It is an amenable number.

1041242021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1041242021 is an equidigital number, since it uses as much as digits as its factorization.

1041242021 is an evil number, because the sum of its binary digits is even.

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

The square root of 1041242021 is about 32268.2819654223. The cubic root of 1041242021 is about 1013.5625655680.

Adding to 1041242021 its reverse (1202421401), we get a palindrome (2243663422).

The spelling of 1041242021 in words is "one billion, forty-one million, two hundred forty-two thousand, twenty-one".