126603349 has 4 divisors (see below), whose sum is σ = 130687360. Its totient is φ = 122519340.

The previous prime is 126603317. The next prime is 126603353. The reversal of 126603349 is 943306621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126603349 - 2⁵ = 126603317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126603359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041959 + ... + 2042020.

It is an arithmetic number, because the mean of its divisors is an integer number (32671840).

Almost surely, 2^126603349 is an apocalyptic number.

It is an amenable number.

126603349 is a deficient number, since it is larger than the sum of its proper divisors (4084011).

126603349 is an equidigital number, since it uses as much as digits as its factorization.

126603349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4084010.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 126603349 is about 11251.8153646423. The cubic root of 126603349 is about 502.1287228828.

The spelling of 126603349 in words is "one hundred twenty-six million, six hundred three thousand, three hundred forty-nine".