123124019 has 2 divisors, whose sum is σ = 123124020. Its totient is φ = 123124018.

The previous prime is 123124003. The next prime is 123124021. The reversal of 123124019 is 910421321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123124019 - 2⁴ = 123124003 is a prime.

It is a super-2 number, since 2×123124019² = 30319048109424722, which contains 22 as substring.

Together with 123124021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123123985 and 123124003.

It is not a weakly prime, because it can be changed into another prime (123124919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61562009 + 61562010.

It is an arithmetic number, because the mean of its divisors is an integer number (61562010).

Almost surely, 2^123124019 is an apocalyptic number.

123124019 is a deficient number, since it is larger than the sum of its proper divisors (1).

123124019 is an equidigital number, since it uses as much as digits as its factorization.

123124019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 123124019 is about 11096.1263060583. The cubic root of 123124019 is about 497.4860735309.

The spelling of 123124019 in words is "one hundred twenty-three million, one hundred twenty-four thousand, nineteen".