124342819 has 2 divisors, whose sum is σ = 124342820. Its totient is φ = 124342818.

The previous prime is 124342787. The next prime is 124342831. The reversal of 124342819 is 918243421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 124342819 - 2⁵ = 124342787 is a prime.

It is a super-2 number, since 2×124342819² = 30922273273733522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124312819) 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, 62171409 + 62171410.

It is an arithmetic number, because the mean of its divisors is an integer number (62171410).

Almost surely, 2^124342819 is an apocalyptic number.

124342819 is a deficient number, since it is larger than the sum of its proper divisors (1).

124342819 is an equidigital number, since it uses as much as digits as its factorization.

124342819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 124342819 is about 11150.9111286926. The cubic root of 124342819 is about 499.1222185680.

The spelling of 124342819 in words is "one hundred twenty-four million, three hundred forty-two thousand, eight hundred nineteen".