124001020 has 96 divisors (see below), whose sum is σ = 308883456. Its totient is φ = 41222400.

The previous prime is 124000999. The next prime is 124001021. The reversal of 124001020 is 20100421.

It is a super-2 number, since 2×124001020² = 30752505922080800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 124000988 and 124001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124001021) 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, 546147 + ... + 546373.

It is an arithmetic number, because the mean of its divisors is an integer number (3217536).

Almost surely, 2^124001020 is an apocalyptic number.

124001020 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 124001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154441728).

124001020 is an abundant number, since it is smaller than the sum of its proper divisors (184882436).

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

124001020 is a wasteful number, since it uses less digits than its factorization.

124001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 124001020 is about 11135.5745249179. The cubic root of 124001020 is about 498.6644625222.

Adding to 124001020 its reverse (20100421), we get a palindrome (144101441).

The spelling of 124001020 in words is "one hundred twenty-four million, one thousand, twenty".