126144149 has 4 divisors (see below), whose sum is σ = 126841260. Its totient is φ = 125447040.

The previous prime is 126144133. The next prime is 126144181. The reversal of 126144149 is 941441621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941441621 = 19 ⋅49549559.

It can be written as a sum of positive squares in 2 ways, for example, as 48580900 + 77563249 = 6970^2 + 8807^2 .

It is a cyclic number.

It is not a de Polignac number, because 126144149 - 2⁴ = 126144133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126144449) 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, 348284 + ... + 348645.

It is an arithmetic number, because the mean of its divisors is an integer number (31710315).

Almost surely, 2^126144149 is an apocalyptic number.

It is an amenable number.

126144149 is a deficient number, since it is larger than the sum of its proper divisors (697111).

126144149 is an equidigital number, since it uses as much as digits as its factorization.

126144149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697110.

The product of its digits is 6912, while the sum is 32.

The square root of 126144149 is about 11231.3912317219. The cubic root of 126144149 is about 501.5209010294.

The spelling of 126144149 in words is "one hundred twenty-six million, one hundred forty-four thousand, one hundred forty-nine".