124849862281 has 3 divisors (see below), whose sum is σ = 124850215623. Its totient is φ = 124849508940.

The previous prime is 124849862257. The next prime is 124849862341. The reversal of 124849862281 is 182268948421.

The square root of 124849862281 is 353341.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 182268948421 = 7 ⋅26038421203.

It can be written as a sum of positive squares in only one way, i.e., 58996037881 + 65853824400 = 242891^2 + 256620^2 .

It is not a de Polignac number, because 124849862281 - 2¹³ = 124849854089 is a prime.

It is a super-2 number, since 2×124849862281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124849862251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 176671 + ... + 530011.

It is an arithmetic number, because the mean of its divisors is an integer number (41616738541).

Almost surely, 2^124849862281 is an apocalyptic number.

124849862281 is the 353341-st square number.

124849862281 is the 176671-st centered octagonal number.

It is an amenable number.

124849862281 is a deficient number, since it is larger than the sum of its proper divisors (353342).

124849862281 is an frugal number, since it uses more digits than its factorization.

124849862281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706682 (or 353341 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 55.

The spelling of 124849862281 in words is "one hundred twenty-four billion, eight hundred forty-nine million, eight hundred sixty-two thousand, two hundred eighty-one".