126745403 has 2 divisors, whose sum is σ = 126745404. Its totient is φ = 126745402.

The previous prime is 126745397. The next prime is 126745427. The reversal of 126745403 is 304547621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126745403 - 2¹⁴ = 126729019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126745403.

It is not a weakly prime, because it can be changed into another prime (126745483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63372701 + 63372702.

It is an arithmetic number, because the mean of its divisors is an integer number (63372702).

Almost surely, 2^126745403 is an apocalyptic number.

126745403 is a deficient number, since it is larger than the sum of its proper divisors (1).

126745403 is an equidigital number, since it uses as much as digits as its factorization.

126745403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 126745403 is about 11258.1260874090. The cubic root of 126745403 is about 502.3164554945.

The spelling of 126745403 in words is "one hundred twenty-six million, seven hundred forty-five thousand, four hundred three".