1021342241 has 4 divisors (see below), whose sum is σ = 1023156912. Its totient is φ = 1019527572.

The previous prime is 1021342237. The next prime is 1021342243. The reversal of 1021342241 is 1422431201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021342241 - 2² = 1021342237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021342243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906491 + ... + 907616.

It is an arithmetic number, because the mean of its divisors is an integer number (255789228).

Almost surely, 2^1021342241 is an apocalyptic number.

It is an amenable number.

1021342241 is a deficient number, since it is larger than the sum of its proper divisors (1814671).

1021342241 is an equidigital number, since it uses as much as digits as its factorization.

1021342241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814670.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1021342241 is about 31958.4455347878. The cubic root of 1021342241 is about 1007.0640618622.

Adding to 1021342241 its reverse (1422431201), we get a palindrome (2443773442).

The spelling of 1021342241 in words is "one billion, twenty-one million, three hundred forty-two thousand, two hundred forty-one".