126456503 has 2 divisors, whose sum is σ = 126456504. Its totient is φ = 126456502.

The previous prime is 126456493. The next prime is 126456511. The reversal of 126456503 is 305654621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126456503 - 2⁶ = 126456439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126456503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126456563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63228251 + 63228252.

It is an arithmetic number, because the mean of its divisors is an integer number (63228252).

Almost surely, 2^126456503 is an apocalyptic number.

126456503 is a deficient number, since it is larger than the sum of its proper divisors (1).

126456503 is an equidigital number, since it uses as much as digits as its factorization.

126456503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 126456503 is about 11245.2880354396. The cubic root of 126456503 is about 501.9345096917.

The spelling of 126456503 in words is "one hundred twenty-six million, four hundred fifty-six thousand, five hundred three".