126341221 has 4 divisors (see below), whose sum is σ = 126883692. Its totient is φ = 125798752.

The previous prime is 126341183. The next prime is 126341249. The reversal of 126341221 is 122143621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82264900 + 44076321 = 9070^2 + 6639^2 .

It is a cyclic number.

It is not a de Polignac number, because 126341221 - 2²¹ = 124244069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126341192 and 126341201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126341321) 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, 270886 + ... + 271351.

It is an arithmetic number, because the mean of its divisors is an integer number (31720923).

Almost surely, 2^126341221 is an apocalyptic number.

It is an amenable number.

126341221 is a deficient number, since it is larger than the sum of its proper divisors (542471).

126341221 is an equidigital number, since it uses as much as digits as its factorization.

126341221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542470.

The product of its digits is 576, while the sum is 22.

The square root of 126341221 is about 11240.1610753583. The cubic root of 126341221 is about 501.7819365269.

Adding to 126341221 its reverse (122143621), we get a palindrome (248484842).

The spelling of 126341221 in words is "one hundred twenty-six million, three hundred forty-one thousand, two hundred twenty-one".