126144019 has 2 divisors, whose sum is σ = 126144020. Its totient is φ = 126144018.

The previous prime is 126144017. The next prime is 126144037. The reversal of 126144019 is 910441621.

It is a weak prime.

It is an emirp because it is prime and its reverse (910441621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126144019 - 2¹ = 126144017 is a prime.

It is a super-2 number, since 2×126144019² = 31824627058944722, which contains 22 as substring.

Together with 126144017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126144017) 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 as a sum of consecutive naturals, namely, 63072009 + 63072010.

It is an arithmetic number, because the mean of its divisors is an integer number (63072010).

Almost surely, 2^126144019 is an apocalyptic number.

126144019 is a deficient number, since it is larger than the sum of its proper divisors (1).

126144019 is an equidigital number, since it uses as much as digits as its factorization.

126144019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 126144019 is about 11231.3854443697. The cubic root of 126144019 is about 501.5207287457.

The spelling of 126144019 in words is "one hundred twenty-six million, one hundred forty-four thousand, nineteen".