126240253 has 2 divisors, whose sum is σ = 126240254. Its totient is φ = 126240252.

The previous prime is 126240241. The next prime is 126240269. The reversal of 126240253 is 352042621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91642329 + 34597924 = 9573^2 + 5882^2 .

It is a cyclic number.

It is not a de Polignac number, because 126240253 - 2⁵ = 126240221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126240053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63120126 + 63120127.

It is an arithmetic number, because the mean of its divisors is an integer number (63120127).

Almost surely, 2^126240253 is an apocalyptic number.

It is an amenable number.

126240253 is a deficient number, since it is larger than the sum of its proper divisors (1).

126240253 is an equidigital number, since it uses as much as digits as its factorization.

126240253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 126240253 is about 11235.6687829430. The cubic root of 126240253 is about 501.6482313632.

Adding to 126240253 its reverse (352042621), we get a palindrome (478282874).

The spelling of 126240253 in words is "one hundred twenty-six million, two hundred forty thousand, two hundred fifty-three".