124912401949 has 2 divisors, whose sum is σ = 124912401950. Its totient is φ = 124912401948.

The previous prime is 124912401947. The next prime is 124912401979. The reversal of 124912401949 is 949104219421.

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., 91972692900 + 32939709049 = 303270^2 + 181493^2 .

It is a cyclic number.

It is not a de Polignac number, because 124912401949 - 2¹ = 124912401947 is a prime.

Together with 124912401947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 124912401899 and 124912401908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124912401947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62456200974 + 62456200975.

It is an arithmetic number, because the mean of its divisors is an integer number (62456200975).

Almost surely, 2^124912401949 is an apocalyptic number.

It is an amenable number.

124912401949 is a deficient number, since it is larger than the sum of its proper divisors (1).

124912401949 is an equidigital number, since it uses as much as digits as its factorization.

124912401949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 124912401949 in words is "one hundred twenty-four billion, nine hundred twelve million, four hundred one thousand, nine hundred forty-nine".