126242201 has 2 divisors, whose sum is σ = 126242202. Its totient is φ = 126242200.

The previous prime is 126242183. The next prime is 126242203. The reversal of 126242201 is 102242621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 14622976 = 10565^2 + 3824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126242201 is a prime.

It is a Sophie Germain prime.

Together with 126242203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (126242203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63121100 + 63121101.

It is an arithmetic number, because the mean of its divisors is an integer number (63121101).

Almost surely, 2^126242201 is an apocalyptic number.

It is an amenable number.

126242201 is a deficient number, since it is larger than the sum of its proper divisors (1).

126242201 is an equidigital number, since it uses as much as digits as its factorization.

126242201 is an evil number, because the sum of its binary digits is even.

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

The square root of 126242201 is about 11235.7554708173. The cubic root of 126242201 is about 501.6508116435.

Adding to 126242201 its reverse (102242621), we get a palindrome (228484822).

The spelling of 126242201 in words is "one hundred twenty-six million, two hundred forty-two thousand, two hundred one".