41240210021 has 6 divisors (see below), whose sum is σ = 42270603666. Its totient is φ = 40234349600.

The previous prime is 41240209999. The next prime is 41240210057. The reversal of 41240210021 is 12001204214.

41240210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1150159396 + 40090050625 = 33914^2 + 200225^2 .

It is a de Polignac number, because none of the positive numbers 2^k-41240210021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41240210821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12264890 + ... + 12268251.

It is an arithmetic number, because the mean of its divisors is an integer number (7045100611).

Almost surely, 2^41240210021 is an apocalyptic number.

41240210021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

41240210021 is a deficient number, since it is larger than the sum of its proper divisors (1030393645).

41240210021 is an equidigital number, since it uses as much as digits as its factorization.

41240210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24533223 (or 24533182 counting only the distinct ones).

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

Adding to 41240210021 its reverse (12001204214), we get a palindrome (53241414235).

The spelling of 41240210021 in words is "forty-one billion, two hundred forty million, two hundred ten thousand, twenty-one".