124271653540 has 96 divisors (see below), whose sum is σ = 273019317984. Its totient is φ = 47469527040.

The previous prime is 124271653537. The next prime is 124271653549. The reversal of 124271653540 is 45356172421.

It can be written as a sum of positive squares in 16 ways, for example, as 889470976 + 123382182564 = 29824^2 + 351258^2 .

It is a junction number, because it is equal to n+sod(n) for n = 124271653493 and 124271653502.

It is not an unprimeable number, because it can be changed into a prime (124271653549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19858092 + ... + 19864348.

It is an arithmetic number, because the mean of its divisors is an integer number (2843951229).

Almost surely, 2^124271653540 is an apocalyptic number.

124271653540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124271653540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136509658992).

124271653540 is an abundant number, since it is smaller than the sum of its proper divisors (148747664444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124271653540 is a wasteful number, since it uses less digits than its factorization.

124271653540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6817 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 124271653540 in words is "one hundred twenty-four billion, two hundred seventy-one million, six hundred fifty-three thousand, five hundred forty".