241009021 has 4 divisors (see below), whose sum is σ = 262918944. Its totient is φ = 219099100.

The previous prime is 241009007. The next prime is 241009039. The reversal of 241009021 is 120900142.

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 de Polignac number, because none of the positive numbers 2^k-241009021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 241009021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241009121) 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, 10954945 + ... + 10954966.

It is an arithmetic number, because the mean of its divisors is an integer number (65729736).

Almost surely, 2^241009021 is an apocalyptic number.

It is an amenable number.

241009021 is a deficient number, since it is larger than the sum of its proper divisors (21909923).

241009021 is a wasteful number, since it uses less digits than its factorization.

241009021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21909922.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 241009021 is about 15524.4652403875. The cubic root of 241009021 is about 622.3161898770.

Adding to 241009021 its reverse (120900142), we get a palindrome (361909163).

The spelling of 241009021 in words is "two hundred forty-one million, nine thousand, twenty-one".