124648019 has 2 divisors, whose sum is σ = 124648020. Its totient is φ = 124648018.

The previous prime is 124647973. The next prime is 124648049. The reversal of 124648019 is 910846421.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (910846421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124648019 - 2⁸ = 124647763 is a prime.

It is a super-2 number, since 2×124648019² = 31074257281248722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124648019.

It is not a weakly prime, because it can be changed into another prime (124648049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62324009 + 62324010.

It is an arithmetic number, because the mean of its divisors is an integer number (62324010).

Almost surely, 2^124648019 is an apocalyptic number.

124648019 is a deficient number, since it is larger than the sum of its proper divisors (1).

124648019 is an equidigital number, since it uses as much as digits as its factorization.

124648019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 124648019 is about 11164.5877219000. The cubic root of 124648019 is about 499.5302508096.

The spelling of 124648019 in words is "one hundred twenty-four million, six hundred forty-eight thousand, nineteen".