126849449 has 4 divisors (see below), whose sum is σ = 129943380. Its totient is φ = 123755520.

The previous prime is 126849421. The next prime is 126849487. The reversal of 126849449 is 944948621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9517225 + 117332224 = 3085^2 + 10832^2 .

It is a cyclic number.

It is not a de Polignac number, because 126849449 - 2¹⁶ = 126783913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126849649) 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, 1546904 + ... + 1546985.

It is an arithmetic number, because the mean of its divisors is an integer number (32485845).

Almost surely, 2^126849449 is an apocalyptic number.

It is an amenable number.

126849449 is a deficient number, since it is larger than the sum of its proper divisors (3093931).

126849449 is an equidigital number, since it uses as much as digits as its factorization.

126849449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093930.

The product of its digits is 497664, while the sum is 47.

The square root of 126849449 is about 11262.7460683441. The cubic root of 126849449 is about 502.4538693492.

The spelling of 126849449 in words is "one hundred twenty-six million, eight hundred forty-nine thousand, four hundred forty-nine".