126849 has 4 divisors (see below), whose sum is σ = 169136. Its totient is φ = 84564.

The previous prime is 126839. The next prime is 126851. The reversal of 126849 is 948621.

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 not a de Polignac number, because 126849 - 2⁹ = 126337 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126839) 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, 21139 + ... + 21144.

It is an arithmetic number, because the mean of its divisors is an integer number (42284).

2¹²⁶⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

126849 is a deficient number, since it is larger than the sum of its proper divisors (42287).

126849 is an equidigital number, since it uses as much as digits as its factorization.

126849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42286.

The product of its digits is 3456, while the sum is 30.

The square root of 126849 is about 356.1586725043. The cubic root of 126849 is about 50.2453276515.

Adding to 126849 its product of digits (3456), we get a triangular number (130305 = T₅₁₀).

The spelling of 126849 in words is "one hundred twenty-six thousand, eight hundred forty-nine".