126499903 has 2 divisors, whose sum is σ = 126499904. Its totient is φ = 126499902.

The previous prime is 126499897. The next prime is 126499949. The reversal of 126499903 is 309994621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126499903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126499903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126499603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63249951 + 63249952.

It is an arithmetic number, because the mean of its divisors is an integer number (63249952).

Almost surely, 2^126499903 is an apocalyptic number.

126499903 is a deficient number, since it is larger than the sum of its proper divisors (1).

126499903 is an equidigital number, since it uses as much as digits as its factorization.

126499903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 126499903 is about 11247.2175670252. The cubic root of 126499903 is about 501.9919246014.

The spelling of 126499903 in words is "one hundred twenty-six million, four hundred ninety-nine thousand, nine hundred three".