126203253 has 16 divisors (see below), whose sum is σ = 183762432. Its totient is φ = 76406000.

The previous prime is 126203249. The next prime is 126203267. The reversal of 126203253 is 352302621.

It is not a de Polignac number, because 126203253 - 2² = 126203249 is a prime.

It is a super-2 number, since 2×126203253² = 31854522135564018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126205253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48598 + ... + 51128.

It is an arithmetic number, because the mean of its divisors is an integer number (11485152).

Almost surely, 2^126203253 is an apocalyptic number.

It is an amenable number.

126203253 is a deficient number, since it is larger than the sum of its proper divisors (57559179).

126203253 is a wasteful number, since it uses less digits than its factorization.

126203253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 126203253 is about 11234.0221203272. The cubic root of 126203253 is about 501.5992168907.

Adding to 126203253 its reverse (352302621), we get a palindrome (478505874).

The spelling of 126203253 in words is "one hundred twenty-six million, two hundred three thousand, two hundred fifty-three".