126191329 has 4 divisors (see below), whose sum is σ = 137663280. Its totient is φ = 114719380.

The previous prime is 126191327. The next prime is 126191437. The reversal of 126191329 is 923191621.

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 126191329 - 2¹ = 126191327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126191294 and 126191303.

It is not an unprimeable number, because it can be changed into a prime (126191321) 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, 5735959 + ... + 5735980.

It is an arithmetic number, because the mean of its divisors is an integer number (34415820).

Almost surely, 2^126191329 is an apocalyptic number.

It is an amenable number.

126191329 is a deficient number, since it is larger than the sum of its proper divisors (11471951).

126191329 is a wasteful number, since it uses less digits than its factorization.

126191329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471950.

The product of its digits is 5832, while the sum is 34.

The square root of 126191329 is about 11233.4913984923. The cubic root of 126191329 is about 501.5834189423.

The spelling of 126191329 in words is "one hundred twenty-six million, one hundred ninety-one thousand, three hundred twenty-nine".