124842149 has 2 divisors, whose sum is σ = 124842150. Its totient is φ = 124842148.

The previous prime is 124842139. The next prime is 124842233. The reversal of 124842149 is 941248421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102921025 + 21921124 = 10145^2 + 4682^2 .

It is an emirp because it is prime and its reverse (941248421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124842149 - 2²⁰ = 123793573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124842139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62421074 + 62421075.

It is an arithmetic number, because the mean of its divisors is an integer number (62421075).

Almost surely, 2^124842149 is an apocalyptic number.

It is an amenable number.

124842149 is a deficient number, since it is larger than the sum of its proper divisors (1).

124842149 is an equidigital number, since it uses as much as digits as its factorization.

124842149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 35.

The square root of 124842149 is about 11173.2783461256. The cubic root of 124842149 is about 499.7894433442.

The spelling of 124842149 in words is "one hundred twenty-four million, eight hundred forty-two thousand, one hundred forty-nine".