126270019 has 2 divisors, whose sum is σ = 126270020. Its totient is φ = 126270018.

The previous prime is 126270017. The next prime is 126270047. The reversal of 126270019 is 910072621.

It is a happy number.

It is an a-pointer prime, because the next prime (126270047) can be obtained adding 126270019 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126270019 - 2¹ = 126270017 is a prime.

It is a super-2 number, since 2×126270019² = 31888235396520722, which contains 22 as substring.

Together with 126270017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126270017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63135009 + 63135010.

It is an arithmetic number, because the mean of its divisors is an integer number (63135010).

Almost surely, 2^126270019 is an apocalyptic number.

126270019 is a deficient number, since it is larger than the sum of its proper divisors (1).

126270019 is an equidigital number, since it uses as much as digits as its factorization.

126270019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 126270019 is about 11236.9933256187. The cubic root of 126270019 is about 501.6876558928.

The spelling of 126270019 in words is "one hundred twenty-six million, two hundred seventy thousand, nineteen".