126099547 has 8 divisors (see below), whose sum is σ = 150379776. Its totient is φ = 103385832.

The previous prime is 126099539. The next prime is 126099551. The reversal of 126099547 is 745990621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126099547 - 2³ = 126099539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126099577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391453 + ... + 391774.

It is an arithmetic number, because the mean of its divisors is an integer number (18797472).

Almost surely, 2^126099547 is an apocalyptic number.

126099547 is a deficient number, since it is larger than the sum of its proper divisors (24280229).

126099547 is an equidigital number, since it uses as much as digits as its factorization.

126099547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783257.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 126099547 is about 11229.4054606644. The cubic root of 126099547 is about 501.4617848719.

The spelling of 126099547 in words is "one hundred twenty-six million, ninety-nine thousand, five hundred forty-seven".