126355403 has 4 divisors (see below), whose sum is σ = 128497080. Its totient is φ = 124213728.

The previous prime is 126355393. The next prime is 126355417. The reversal of 126355403 is 304553621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126355403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126355423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070750 + ... + 1070867.

It is an arithmetic number, because the mean of its divisors is an integer number (32124270).

Almost surely, 2^126355403 is an apocalyptic number.

126355403 is a deficient number, since it is larger than the sum of its proper divisors (2141677).

126355403 is an equidigital number, since it uses as much as digits as its factorization.

126355403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141676.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 126355403 is about 11240.7919205010. The cubic root of 126355403 is about 501.8007110939.

The spelling of 126355403 in words is "one hundred twenty-six million, three hundred fifty-five thousand, four hundred three".