124338749 has 2 divisors, whose sum is σ = 124338750. Its totient is φ = 124338748.

The previous prime is 124338743. The next prime is 124338763. The reversal of 124338749 is 947833421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105719524 + 18619225 = 10282^2 + 4315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124338749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124338743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62169374 + 62169375.

It is an arithmetic number, because the mean of its divisors is an integer number (62169375).

Almost surely, 2^124338749 is an apocalyptic number.

It is an amenable number.

124338749 is a deficient number, since it is larger than the sum of its proper divisors (1).

124338749 is an equidigital number, since it uses as much as digits as its factorization.

124338749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 124338749 is about 11150.7286309012. The cubic root of 124338749 is about 499.1167727379.

The spelling of 124338749 in words is "one hundred twenty-four million, three hundred thirty-eight thousand, seven hundred forty-nine".