124354545281 has 2 divisors, whose sum is σ = 124354545282. Its totient is φ = 124354545280.

The previous prime is 124354545277. The next prime is 124354545389. The reversal of 124354545281 is 182545453421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93626208256 + 30728337025 = 305984^2 + 175295^2 .

It is an emirp because it is prime and its reverse (182545453421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124354545281 - 2² = 124354545277 is a prime.

It is a super-2 number, since 2×124354545281² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (124354545781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62177272640 + 62177272641.

It is an arithmetic number, because the mean of its divisors is an integer number (62177272641).

Almost surely, 2^124354545281 is an apocalyptic number.

It is an amenable number.

124354545281 is a deficient number, since it is larger than the sum of its proper divisors (1).

124354545281 is an equidigital number, since it uses as much as digits as its factorization.

124354545281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768000, while the sum is 44.

The spelling of 124354545281 in words is "one hundred twenty-four billion, three hundred fifty-four million, five hundred forty-five thousand, two hundred eighty-one".