124040 has 32 divisors (see below), whose sum is σ = 319680. Its totient is φ = 42432.

The previous prime is 124021. The next prime is 124067. The reversal of 124040 is 40421.

124040 = T₂₁ + T₂₂ + ... + T₉₀.

It is an Ulam number.

It is an unprimeable number.

124040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59 + ... + 501.

It is an arithmetic number, because the mean of its divisors is an integer number (9990).

2¹²⁴⁰⁴⁰ is an apocalyptic number.

124040 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 124040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159840).

124040 is an abundant number, since it is smaller than the sum of its proper divisors (195640).

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

124040 is a wasteful number, since it uses less digits than its factorization.

124040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 124040 is about 352.1931288370. The cubic root of 124040 is about 49.8716709147.

Adding to 124040 its reverse (40421), we get a palindrome (164461).

The spelling of 124040 in words is "one hundred twenty-four thousand, forty", and thus it is an iban number.