126279949 has 8 divisors (see below), whose sum is σ = 133673760. Its totient is φ = 119088816.

The previous prime is 126279931. The next prime is 126279991. The reversal of 126279949 is 949972621.

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 126279949 - 2⁵ = 126279917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126279449) 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 7 ways as a sum of consecutive naturals, for example, 49387 + ... + 51880.

It is an arithmetic number, because the mean of its divisors is an integer number (16709220).

Almost surely, 2^126279949 is an apocalyptic number.

It is an amenable number.

126279949 is a deficient number, since it is larger than the sum of its proper divisors (7393811).

126279949 is a wasteful number, since it uses less digits than its factorization.

126279949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101339.

The product of its digits is 489888, while the sum is 49.

The square root of 126279949 is about 11237.4351611033. The cubic root of 126279949 is about 501.7008066204.

The spelling of 126279949 in words is "one hundred twenty-six million, two hundred seventy-nine thousand, nine hundred forty-nine".