124509473881 has 9 divisors (see below), whose sum is σ = 134828835519. Its totient is φ = 114927587736.

The previous prime is 124509473867. The next prime is 124509473911. The reversal of 124509473881 is 188374905421.

The square root of 124509473881 is 352859.

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

It can be written as a sum of positive squares in only one way, i.e., 18418561225 + 106090912656 = 135715^2 + 325716^2 .

It is not a de Polignac number, because 124509473881 - 2¹⁵ = 124509441113 is a prime.

It is a super-2 number, since 2×124509473881² (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 (124509473801) 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 in 8 ways as a sum of consecutive naturals, for example, 4573596 + ... + 4600738.

Almost surely, 2^124509473881 is an apocalyptic number.

124509473881 is the 352859-th square number.

124509473881 is the 176430-th centered octagonal number.

It is an amenable number.

124509473881 is a deficient number, since it is larger than the sum of its proper divisors (10319361638).

124509473881 is an frugal number, since it uses more digits than its factorization.

124509473881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54312 (or 27156 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 124509473881 in words is "one hundred twenty-four billion, five hundred nine million, four hundred seventy-three thousand, eight hundred eighty-one".